SYLLABUS INTRO OF MECHANICS.

SYLLABUS INTRO OF MECHANICS.

    BASIC ENGINEERING MECHANICS

Course Outcomes: Through this course, students should be able to

• Understand and analyze forces, moments and their applications in real life situations.

• Describe the static equilibrium of particles with Free body diagram.

• Analyze the concepts of moment of inertia and its application in real life situations

• Formulate equations of motion for the rigid body using D'Alembert principle.

Unit I

               Introduction to Mechanics: Basic concepts, System of forces, Coplanar Concurrent Forces, Components in 2-D Plane-Resultant-Moment of Forces and its Applications, Couples and Resultant of Force System, Equilibrium of System of forces, Free body diagrams, Equations of Equilibrium of Co-planar Systems

Unit II             

              Friction: Introduction to friction, Types of friction, Limiting friction, Angle of friction, Laws of Friction, Static and Dynamic friction, Motion of bodies.

Unit III

            Centroid and Moment of Inertia: Centroids of areas and lines, Centroids of composite plates and wires, First moments of areas and lines, Moment of inertia of plane sections, Theorems of the moment of inertia, Center of gravity, Moment of inertia of standard and composite sections, Mass moment of inertia of thin plates

Unit IV

              Analysis of structures: Introduction to trusses, Definition of trusses, Simple trusses,  Analysis of truss by the method of joint, Analysis of truss by the method of the section.

Unit V

              Introduction to Dynamics: Basic terms, general principles in dynamics, Types of motion, Rectilinear motion, Plane curvilinear motion.

Unit VI

              Plane Kinematics and Kinetics of Rigid bodies : D' Alembert's principle and its applications in-plane motion and connected bodies, Work energy principle and its application in the plane motion of connected bodies, Kinetics of rigid body rotation.

Text Books:

1. VECTOR MECHANICS FOR ENGINEERS, STATICS AND DYNAMICS by BEER AND JOHNSTON, MCGRAW HILL EDUCATIONReferences:1. ENGINEERING MECHANICS: STATICS by ANDREW PYTEL | JAAN KIUSALAAS, CENGAGE LEARNING2. ENGINEERING MECHANICS by BASU DEB BHATTACHARYYA, OXFORD UNIVERSITY PRESS3. ENGINEERING MECHANICS - STATICS AND DYNAMICS by R. C. HIBBELER, A. GUPTA, PEARSON

3-D printers a revolutionary frontier for medicine.

3-D printers a revolutionary frontier for medicine.

What is 3-D printing?

Additive manufacturing, or 3-D printing, use a digital model to build an object of any size or shape—by adding successive layers of material in a single continuous run. This layering capability allows the manufacturing of complex shapes, such as the intricate structure of bones or vascular channels, that would be impossible to create by other methods.

Advances in computer design and the ability to translate medical imaging—such as X-rays, computerized tomography (CT), magnetic resonance imaging (MRI) or ultrasound—to digital models that can be read by 3-D printers are expanding its applications in health care. 3-D printing is opening a horizon of amazing possibilities, such as bioprinting living tissues with "biological ink".

An advantage of 3-D printing technology is that it allows for personalization of health care—customized prostheses and tailor-made drugs and organs, for example. This technology may also decrease costs by disrupting supply chains and lowering the production costs of medical devices, surgical instruments and other health-care products.

In 2013, there were 10 million 3-D-printed hearing aids in circulation worldwide. This huge impact in the hearing aid industry has been called the "quiet revolution" as it has gone almost unnoticed. Before 3-D printing, it took one week to manufacture a hearing aid; now it takes only a few hours. The development of sophisticated and accurate 3-D oral scanners and new 3-D printing dental materials has also catapulted 3-D printing as a disruptive technology in dentistry.

In 2016, the Food and Drug Administration Agency (FDA) approved 3-D printing denture material and this set the stage for dentists to introduce 3-D-printing manufacturing laboratories into their offices. The idea of producing crowns, orthodontic appliances or removable dentures with a push of a button in your dentist's office is not Printing living organs. An exciting area with huge potential for the future is the manufacturing of 3-D-printed drugs. The first 3-D-printed drug approved by the FDA is the anti-seizure medication Sprint am. The 3-D printing process enables the creation of a highly porous structure that can load a large dosage of the active compound into a rapidly dissolvable pill.

This possibility of highly personalized drugs, which optimize beneficial effects while reducing side effects, made in real-time using digital recipes could radically change the pharmaceutical industry. One of the most promising 3-D printing technological advances is the bioprinting of living tissue. Great strides have been made in manufacturing tissue constructs that could eventually be used for organ transplants.

The clinical manufacturing of biologically active complex structures such as functional skeletal muscle or liver tissue is promising. The recent commercialization of functional human liver or kidney constructs—the so-called "lab on a chip organ"—will have a huge impact on medical research, drug discovery and toxicology. It could possibly reduce the need to use experimental animal models. Although we may be far away from surgery on Mars using 3-D printing technology, the advances on earth are already changing health care.

2025 tech predictions both thrilling and scary

2025 tech predictions both thrilling and scary

We humans will be walking, running, sleeping data streams pumping out constantly updated metrics that will be both safeguarded and valuable. We'll do our jobs with the assistance of artificial intelligence to achieve better results faster.

And we'll leverage technological breakthroughs to create digital gatekeepers that tame the information-overload beast. At least that's the idealized vision of our society 10 years down the road, according to a new report out Thursday from the Institute for the Future called Information Generation: Transforming the Future Today. The project was commissioned by cloud-storage company EMC, with quantitative research conducted by Vanson Bourne.

And if things don't go as planned and all our data are allowed to bolt out of the corral?

"Well that's the dance that's happening now," says Rachel Maguire, research director at Institute for the Future, a non-profit think tank. "We're in the age of omnipresence, so the question is, can we solve for the privacy issue so we and future generations can enjoy the benefits of technology?"

The institute's report identifies five "key directional shifts" in the coming decade. The first is the information economy, which will find the data we generate from workouts and shopping sprees either being securely cached at our directive or else sold, donated or traded for financial or social gain. Commerce in the data arena will be able to do everything from literally enrich us to helping society at large via the secure transfer of genomic data. Related in many ways is the second shift, which will find a mushrooming army of connected devices – from cars to toasters – that will relay information and trends to each other and, via the Internet, the companies that manufacture them.

The advantages of such sentient hardware range from self-piloting or pilot-assisted cars that can better navigate their surroundings and avoid accidents to freezers that can automatically place orders for your dwindling stash of Rocky Road.

"All this data exhaust inherently generates privacy concerns and the need for protecting that data," says Maguire, adding that she's buoyed by the progress being made on a variety of fronts to protect personal data. "We must have ownership and oversight of our data."

The third big shift is made by the information generation – those growing up in the era of Internet ubiquity – is in the arena of augmented decision making. "Tech leaders increasingly are saying that we're moving to a world where employees with smart decision-support systems in the workplace," says Maguire, citing the example of a doctor pulling from reams of research at the click of a mouse. "We're not talking about job displacement by AI (artificial intelligence) robots. We're talking about having workplace tools that let us do our jobs better."

Examples of this approach include Hong Kong's efficient subway system, which uses AI systems to run simulated train lines to determine the best possible timetable while saving the company nearly $1 million a year, she says.

"The fourth coming shift is dubbed "multi-sensory communication," and is perhaps best exemplified by one feature of Apple Watch. Using a built-in tech that can tap its user on the wrist with a burst of energy, Watch is capable of relaying wearers' heartbeats from watch to watch. Maguire calls this just the tip of an iceberg of tech innovations whose mission is to save us from information overload.

"The next decade will find us receiving information in new ways, using new senses," she says, citing Marriott Hotels' Teleporter, a roving device that allows visitors to be whisked away to properties around the world thanks to the magic of Facebook-owned Oculus Rift virtual reality goggles.

"Some of this stuff might be clunky now, but early indications are that these breakthroughs will become less contrived and more organic," she says. "Soon we simply won't be just taking things in through screens. "The last shift circles back to the first. Under the heading "privacy-enhancing tech" are predictions of cryptographic breakthroughs that hopefully will deliver us from a reality where it seems every major outfit is being hacked on an almost daily basis of all the shifts, however, this one clearly deserves the most attention. Without encrypted and secure data transfer, our digital lives will fast become an open book.

I, Me and my Career: Plan before it's too late

I, Me and my Career: Plan before it's too late

Planning Career Prospects in India

The unhitched male of Planning is an undergrad level Bachelor's Degree program. Numerous perusers have been getting some information about this expert course. Most inquiries spun around the profession prospects, nature of work and 'future extension' related with this course. In the wake of noting numerous such inquiries, I chose to think of an article where the previously mentioned points of interest will be talked about in detail.

In this article, you will read about vocation prospects and extension related with Bachelor of Planning course. You will read about different employment that is accessible before Bachelor of Planning graduates, nature of their work, surely understood enrollment specialists and PG courses accessible before graduates.

In the wake of finishing a Bachelor of Planning course, graduates may either begin working or go for additionally thinks about (PG courses). Most importantly, let us look at the 'employment' part. From that point forward, you will read about PG courses and further examinations.

CAREER PROSPECTS AND JOB OPPORTUNITIES

In the wake of finishing the 4 years in length Bachelor of Planning course, graduates may begin filling in as expert organizers for Government or Private ventures and setups.

Organizers have differing openings for work accessible before them. The planning graduates approaches both Government and in addition Private area openings for work.

WELL KNOWN RECRUITERS

Government Departments identified with Urban and Town arranging, Government worked Housing plans, Government Transportation Projects (Highways, Railways and Metros and so on), Government Construction and restoration ventures, PWD work posts, Municipal Corporation work posts and so on are outstanding Government openings for work accessible before arranging graduates. Government offices dealing with previously mentioned and additionally comparable administrations are known to enlist arranging experts.

With regards to the private part, firms enjoyed Realty Development, Construction firms, Architecture and Interior Design firms, Public Structure Construction firms (PPP demonstrate like streets and extensions and so forth), NGOs and so forth are known to enroll arranging experts.

Independent work openings are additionally accessible before arranging experts. Beginning a consultancy benefit is the principal thing that strikes a chord, discussing independent work.

NATURE OF WORK

An arranging proficient's fundamental assignment is to make ideal utilization of assets accessible before him/her and make utilitarian and agreeable constructed condition utilizing those assets. Organizers are engaged with configuration, arranging and development of human settlements, urban communities and towns. They are additionally associated with the arranging, plan and making of administrations and offices valuable to the general public, for example, transportation frameworks, waste frameworks, clean frameworks, water supply frameworks and so on.

Configuration, arranging, looking over, demonstrate making, cost estimation, man administration and task administration frame an essential piece of an arranging proficient's activity. To a degree, site visits, supervision and field trips likewise are engaged with this calling.

PG COURSES AND FURTHER STUDIES

Bachelor of Planning graduates are eligible to pursue Master of Planning as well as relevant M.Tech. and M.Sc. courses. Other than Master’s Degree courses, graduates are also eligible to pursue relevant PG Diploma courses!

• Master of Planning course can be pursued to specialize in disciplines such as-
• Transport Planning
• Landscape Architecture
• Housing
• Urban Design and Planning
• Architectural Conservation and Restoration
• Housing
• Environmental Planning

SALARY

At the start, Planning professionals may earn anywhere between 15-40k Rupees per month. Starting salary depends on factors like the profile of the employer (Government job, Private sector job or entrepreneurship), job profile, the location of the job etc. With time, planning professionals may gain valuable work experience. Along with work experience, salary figure will also rise up!

how to plan your career prior to Completion of Graduation...

Click here: I, Me and MY CAREER

GST Council clears e-way bill mechanism, to be rolled out by June 1

GST Council clears e-way bill mechanism, to be rolled out by June 1

Merchandise and Ventures Tax (GST) Council on Saturday chose to go for early execution of e-Way Bill for between state development of things from February 1. For a consistent development of merchandise crosswise over states, the Goods and Services Tax (GST) Council on Saturday chose to go for early usage of e-Way Bill for between state development of things from February 1 and uniform required consistency from June one year from now.

"The principles for usage of across the nation e-way Bill framework for between State development of products on a mandatory premise will be advised with impact from February 1, 2018. This will bring consistency over the states for consistency between state development of merchandise. "Be that as it may, regardless uniform arrangement of e-route Bill for between State and intra-State development will be actualized the nation over by first June 2018," a fund service public statement said here after the 24th gathering of the GST chamber held through video meeting.

An e-Way Bill is required for the development of merchandise worth more than Rs 50,000. The across the country e-way Bill framework will be prepared to be taken off on a preliminary premise most recent by January 16, 2018.

Exchange and transporters can begin utilizing this framework on a willful premise from January 16, 2018. "While the framework for both between state and intra-state e-Way Bill age will be prepared by January 16, 2018, the states may pick their own particular timings for usage of e-Way Bill for intra-state development of products on any date before June 1, 2018," the announcement elucidated.

There are sure states which are as of now having the arrangement of e-Way Bill for intra-state and in addition between state development and a portion of those states can be early adopters of national e-Way Bill framework for intra-state development additionally, it said. Till such time as National e-way Bill is prepared, the states were approved to proceed with their own different e-Way Bill frameworks.

"Be that as it may, it was spoken to by the exchange and transporters this is causing undue hardship in between state development of merchandise and along these lines, getting an early all India arrangement of e-Way Bill has turned into a necessity."As the aggregate income gathered under GST fell by around 10 for each penny to Rs 83,346 crore for the long stretch of October from over Rs 92,000 crore in September, the administration felt since execution of a portion of the principal highlights of GST, for example, coordinating of profits, e-path charge and in addition invert charge component have been delayed, the expense consistency was not up to the stamp

MCQsCentroid of Area/Lamina MCQs

MCQsCentroid of Area/Lamina MCQs

Centroid of Area/Lamina

Q1) Which of the following laminas do not have centroid at its geometrical centre?

a. Circle
b. Equilateral triangle
c. Right angled triangle👈
d. None of the above

Q2) If a material has no uniform density throughout the body, then the position of centroid and centre of mass are ________

a. identical
b. not identical 👈
c. independent upon the density
d. unpredictable

Q3) What is the centroidal distance along the line of symmetry XO for the quarter circle shown below?
(where D= 4r/3π)

a. √(1/D)
b. √D
c. √2 (D) 👈
d. √2 (D2)

Q4) What is the angle made by side of a square lamina if it is freely suspended from a corner with the horizontal?

a. 0°
b. 45°👈
c. 90°
d. 180°

Q5) What is the C.G of an isosceles triangle of base 20 cm and side 40?

a. 12.90 cm👈
b. 13.28 cm
c. 19.36 cm
d. 38.72 cm

Q6) Uniformly distributed the load of 5 kN acts on a simply supported beam of length 10 m. What are the reactions at the end points of the beam?

a. 12.5 kN
b. 25 kN👈
c. 50 kN
d. None of the above

Q7) What is the centroidal distance of an equilateral triangle of side 2 m?

a. 0.866 m
b. 0.769 m.
c. 1.000 m
d. 0.577 m👈

Q8) What is the distance of centroid with respect to diagonal shown in the diagram below?

a. a /√3
b. a /√2
c. a /√18👈
d. 3a /√2

Q9) Which method is used to determine the centroid of a composite figure?

a. Analytical method
b. Graphical method
c. Both a. and b.👈
d. None of the above

Q10) Moment of Inertia of a rectangular section about any axis=
a.  bd^3/12
b.  db^3/12
c.  bd^3/12 + Ax^2👈
d.  πd^4/64

Where b=width, A=Area of the cross section, d=depth for rectangular section and diameter of circular
sections, x=distance between the centroid of the section from the axis.

Q11) Centroid of a section about X axis is:

a. About which ∫y^2dA =0
b. About which ∫ydA=0👈
c. About which ∫xydA=0
d. About which ∫x^2y^2dA=0

Q12) Moment of inertia of a section about X axis is

a. ∫y^2dA👈
b. ∫ydA
c. ∫xydA
d. ∫x^2y^2dA

Nokia 2 With Snapdragon 212 & 4100mAh Fails To Impress Due To Its 99 Euros Price Tag

Nokia 2 With Snapdragon 212 & 4100mAh Fails To Impress Due To Its 99 Euros Price Tag

The Nokia mark name that was sold to HMD Global by the parent organization has neglected to live up the publicity. HMD Global kept money intensely on Nokia wistfulness and brand esteem, however, unfortunately, did not foresee the hardened rivalry that it faces in a key market like India. HMD Global needs a bit of the greatest cell phone advertising on the planet and is urgently attempting to satisfy the requesting buyer, however, has it done what's necessary? They propelled the new Nokia 2 in India where they realize that section level gadgets are in colossal request, however, have they satisfied the desires? How about we discover in the accompanying sections.

HMD Global had planned the occasion at 12noon and being a Nokia fan I needed to tune in to the live stream. We as a whole realized that the Nokia 2 was touted to be propelled in light of the fact that somebody in HMD Global utilized Antutu benchmark to test the cell phone. You see once a cell phone is tried on Antutu its spec sheet can be gotten to by anybody. The general population at HMD Global began off by saying that they had widely addressed the Indian clients and needed to know how they organize the cell phone necessities. The survey comes about uncovered that battery life was an essential concern, trailed by the show, LTE network and camera. They chose to fabricate the Nokia 2 utilizing these criteria.

The Nokia 2 has a 5inch HD determination LTPS show. The LTPS show which is encased in Corning Gorilla Glass is said to be more power proficient than TFT boards that are at present accessible in the market. They are likewise demonstrated to give dynamic shading generation and a higher difference proportion. Nokia at that point took the greatest individuals' demand and included in a 4100mAh battery the Nokia 2 which ensures two days battery life regardless of whether you utilize your cell phone for 5 long periods of screen time every day. Since the Indian gathering of people needs the quicker network, they have included LTE availability with the assistance of the Qualcomm Snapdragon 212 chipset.

Since remaining solitary cameras have been supplanted by cell phone cameras, Nokia has included an 8MP back camera with LED streak on the front of a 5MP camera for better photographs. You likewise get boundless distributed storage of photographs with Google Photos.HMD Global have satisfied their guarantee of unadulterated Android and included the Nokia 2 with Android 7.1.1 Nougat. They guarantee that the Nokia 2 will be moved up to Android Oreo later on. The Nokia 2 will be propelled in November and will be accessible online and also disconnected in Pewter Black, Pewter White and Copper shading variations.

So for what reason does this cell phone neglect to inspire us even after all these appealing highlights? We will now rattle off its blemishes. To begin with, we have 1.3GHz quad-centre CPU which is certainly not a poor entertainer however it is combined with only 1GB of LPDDR3 RAM. This implies you should state farewell to multitasking. The following obstacle is the inner memory which is an irrelevant 8GB. While we realize that the passage level client won't utilize numerous applications and he/she even has a possibility for moving some applications to SD card, we fear the WhatsApp beast which powers all media to be put away on the interior memory and this implies your inward memory will be drained quick. The last and the greatest imperfection of the Nokia 2 is its sticker price. At the dispatch occasion, it was declared that the Nokia 2 will retail for 99 Euros or 7462 INR. Presently while this may not mirror the genuine Indian valuing we are certain the Nokia 2 will retail for someplace around the seven thousand checks. This turns into an enormous issue for HMD Global as they confront extreme rivalry from less expensive and more effective entertainers like the Xiaomi Redmi 4A and Moto C Plus.

Kinematics (Rectilinear and Curvilinear Motion)

Kinematics (Rectilinear and Curvilinear Motion)

Kinematics 

Kinematics is a branch of classical mechanics that describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without considering the mass of each of the forces that caused the motion.

Kinematics is the mathematical description of motion. The term is derived from the Greek word kinema, meaning movement. In order to quantify motion,

a mathematical coordinate system, called a reference frame, is used to describe space and time. Once a reference frame has been chosen, we can introduce the physical concepts of position, velocity and acceleration in a mathematically precise manner. The figure shows a Cartesian coordinate system in one dimension with unit vector ˆi pointing in the direction of increasing x -coordinate.

Figure: A one-dimensional Cartesian coordinate system.

IMPORTANT TERMS:-

Speed: The speed of a body may be defined as its rate of change of displacement with respect to its surroundings. The speed of a body is irrespective of its direction and is, thus, a scalar quantity.

Velocity: The velocity of a body may be defined as its rate of change of displacement, with respect to its surroundings, in a particular direction. As the velocity is always expressed in a particular direction, therefore it is a vector quantity.

Acceleration: The acceleration of a body may be defined as the rate of change of its velocity. It is said to be positive, when the velocity of a body increases with time, and negative when the velocity decreases with time. The negative acceleration is also called retardation. In general, the term acceleration is used to denote the rate at which the velocity is changing. It may be uniform or variable.

Uniform acceleration: If a body moves in such a way that its velocity changes in equal magnitudes in equal intervals of time, it is said to be moving with a uniform acceleration

Variable acceleration: If a body moves in such a way, that its velocity changes in unequal magnitudes in equal intervals of time, it is said to be moving with a variable acceleration.

Distance traversed: It is the total distance moved by a body. Mathematically, if body is moving with a uniform velocity (v), then in (t) seconds, the distance traversed

                                                                                s = v X t
In this chapter, we shall discuss the motion under uniform acceleration only.

  MOTION UNDER UNIFORM ACCELERATION

           

Consider the *linear motion of a particle starting from O and moving along OX with a uniform

acceleration as shown in Fig. 17.1. Let  P be its position after t seconds.

Let                                            u = Initial velocity,

                                                  v = Final velocity,

                                                  t = Time (in seconds) taken by the particle to change its velocity

                                                         from u to v.

                                                 a = Uniform positive acceleration, and

                                                 s = Distance travelled in t seconds.

Since in t seconds, the velocity of the particle has increased steadily from (u) to (v) at the

rate of a, therefore total increase in velocity

                                                     =   a t

∴                                           v =  u + a t ...(i)

MOTION UNDER FORCE OF GRAVITY

It is a particular case of motion, under a constant acceleration of (g) where its *value is taken as 9.8 m/s2. If there is a free fall under gravity, the expressions for velocity and distance travelled in terms of initial velocity, time and gravity acceleration will be :

But, if the motion takes place against the force of gravity, i.e., the particle is projected upwards, the corresponding equations will be :

Notes: 1. In this case, the value of u is taken as negative due to upward motion.

2. In this case, the distances in upward direction are taken as negative, while those in the

downward direction are taken as positive.

DISTANCE TRAVELLED IN THE nth SECOND

GRAPHICAL REPRESENTATION OF VELOCITY, TIME AND DISTANCE TRAVELLED BY A BODY

The motion of body may also be represented by means of a graph. Such a graph may be drawn by plotting velocity as ordinate and the corresponding time as abscissa as shown in Fig.

17.5. (a) and (b). Here we shall discuss the following two cases :

1. When the body is moving with a uniform velocity.

Consider the motion of a body, which is represented by the graph OABC as shown in Fig. 17.5(a). We know that the distance traversed by the body,

s = Velocity × Time

Thus we see that the area of the figure OABC (i.e., velocity × time) represents the distance, 

2. When the body is moving with a variable velocity

We know that the distance traversed by a body, traversed by the body, to some scale.

S= ut + 1/2 at²

From the geometry of the Fig. 17.5 (b), 

                                      we know that area of the figure OABC =  Area (OADC + ABD)

                                                            But area of figure OADC = u × t
and                                             

                                                 area of figure ABD = 1/2 × t × at =1/2 at²

∴ Total area OABC = S=ut+1/2 at²


Thus, we see that the area of the OABC represents the distance traversed by the body to some scale. From the figure, it is also seen

                                                                            tan α = at/t = a

Thus, tan α represents the acceleration of the body.

Example:- A train moving with a velocity of 30 km.p.h. has to slow down to 15 km.p.h.

due to repairs along the road. If the distance covered during retardation be one kilometer and that

covered during acceleration be half a kilometer, find the time lost in the journey.

                          ∴ Total time, t = t₁ + t₂ = 2.67 + 1.33 = 4 min

If the train had moved uniformly with a velocity of 30 km/hr,


                          then the time required to cover 1.5 km=60/30 * 3/2 =3 min. ...(iii)

                                                      ∴ Time lost = 4 – 3 = 1 min Ans.

                           

Samsung Finds Out If You Have Enough Old Smartphones You Can Mine Bitcoins With Them

Samsung Finds Out If You Have Enough Old Smartphones You Can Mine Bitcoins With Them

On the off chance that you are a cell phone fan with profound pockets, odds are you move to the following lead cell phone when it is discharged in your market. The end result for your old cell phone at that point? It is either given over to another person or you exploit trade alternative with any web-based business site. The old cell phone is reused for parts however in the event that the cell phone is as yet fit for performing for what reason would it be a good idea for it to be rejected? Samsung, who offers the most cell phones in India thinks about this issue. So as opposed to reusing, they have chosen to go for something they get a kick out of the chance to call "upcycling". They have consolidated 40 Samsung Galaxy S5 cell phones and made a Bitcoin mining machine.

While Samsung has not gone into the specifics of their task they are glad to display the accomplishments. They report that only eight Samsung Galaxy S5s could mine bitcoins more viable than a solitary Intel i7 2600 CPU. Besides, cell phones utilize less influence than a PC which implies this bitcoin mining machine will enable you to round up the cash quickly without utilizing more power. Samsung could do this at their C-Lab and they displayed their undertaking at SDC 2017.

Aside from mining bitcoins, Samsung demonstrated how their old cell phones can be utilized as a part of inventive ways. Samsung took an old Galaxy tablet and changed over it into an Ubuntu controlled workstation. They displayed a repurposed cell phone with facial acknowledgement to fill in as an entryway bolt which would enable confided in people to come in. They utilized an even more seasoned Samsung Galaxy S3 to screen a fish tank. They have set up their accomplishments in this GitHub page for you to look at.

Presently you may ask why a GitHub page? You will be cheerful to realize that Samsung will discharge the devices they utilized as a part of their "Upcycling" activity for general society to utilize. The instruments will be discharged as an open beta and will enable you to open the Android and introduce custom programming on it. While we don't have a time span we anticipate that them will be discharged before the current year's over.

Jio, Airtel, Vodafone, and Others: Plans With 1GB Data Per Day, Unlimited Calling You Can Get Today

Jio, Airtel, Vodafone, and Others: Plans With 1GB Data Per Day, Unlimited Calling You Can Get Today

Features

Jio offers four designs with 1GB information for every day.

Airtel and Vodafone give 1.5GB information consistently at not as much as Rs. 350.

BSNL and Jio offer designs with validities for over 3 months.

Jio cashback offer will reach an end this week, which means no more complimentary gifts worth Rs. 2,599 on obtaining revives of Rs. at least 399. So in the event that you need to profit the advantages, it's about time that you join the Jio temporary fad and turn into a Prime supporter. In any case, there are numerous who are more than happy with their present administrator, regardless of whether it is Airtel, Vodafone, Idea or BSNL, as they offer designs with 1GB information designation for each day at aggressive costs. This leaves no purpose behind them to change to Jio and their present telecom specialist organization behind. On the off chance that you are as yet not certain which administrator and plan is the privilege for you, we have ordered a rundown of the best designs with 1GB information for every day to enable you to make sense of the appropriate response. Investigate.

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MCQs on Kinematics

MCQs on Kinematics

MCQ. Total distance covered in total time taken is termed as
A. instantaneous speed
B. average speed
C. uniform speed
D. variable speed
Answer B

MCQ. Velocity is the
A. distance covered per unit time
B. displacement covered per unit time
C. time taken per unit distance
D. time taken per unit displacement
Answer B

MCQ. Distance in specified direction is termed as
A. Directional Distance
B. Uni-directional Distance
C. Displacement
D. Directional Displacement
Answer C




MCQ. The speed of the truck is 40 ms-1, after 10 seconds its speed decreases to 20 ms-1, its acceleration is.
A. 1 ms-1
B. 2 m s-1
C. 4 ms-1
D. 5 ms-1
Answer B

MCQ. Symbol for distance is
A. s
B. d
C. dt
D. a
Answer B

MCQ. Speed of sound in water is 1500 ms-1, depth of water when reflected sound waves are detected after 0.40 s is
A. 700 m
B. 600 km
C. 600 m
D. 750 km
Answer C

MCQ. If a snail crawls 12 cm in 60 s then it's average speed in mm s-1 is
A. 2 mm s-1
B. 5 mm s-1
C. 10 mm s-1
D. 20 mm s-1
Answer A

MCQ. Speed of a body in particular direction can be called
A. acceleration
B. displacement
C. velocity
D. distance
Answer C

MCQ. If distance is increasing uniformly with time, then velocity is
A. increasing
B. decreasing
C. constant
D. zero
Answer C

MCQ. If slope of a graph is zero and so displacement, then velocity is
A. increasing
B. decreasing
C. constant
D. zero
Answer D

Download this pdf file (Kinematics) to practice more Mcqs

MCQs on Analysis of Truss Structures

MCQs on Analysis of Truss Structures

NOTE: Statically determinate-- Perfect Truss

Statically Indeterminate-- Imperfect Truss

1. The number of independent equations to be satisfied for static equilibrium of a plane structure is

a) 1
b) 2
c) 3
d) 6
Ans: c

2. If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by
a) m + r + 2j
b) m - r + 2j
c) m + r - 2j
d) m + r - 3j
Ans: c




3. Number of unknown internal forces in each member of a rigid jointed plane frame is
a) 1
b) 2
c) 3
d) 6
Ans: b

4. Degree of static indeterminacy of a rigid-jointed plane frame having 15 members, 3 reaction components and 14 joints is
a) 2
b) 3
c) 6
d) 8
Ans: c

5. A pin-jointed plane frame is unstable if
a) (m + r)<2j
b) m + r = 2j
c) (m + r)>2j
d) none of the above
where m is the number of members, r is reaction components and j is a number of joints
Ans: a

6. A rigid-jointed plane frame is stable and statically determinate if
a) (m + r) = 2j
b) (m + r) = 3j
c) (3m + r) = 3j
d) (m + 3r) = 3j
where m is number of members, r is reaction components and j is number of joints
Ans: c

7. The number of independent equations to be satisfied for static equilibrium in a space structure is
a) 2
b) 3
c) 4
d) 6
Ans: b

8. The number of independent displacement components at each joint of a rigid-jointed space frame is
a) 1
b) 2
c) 3
d) 6
Ans: d

9. The principle of virtual work can be applied to elastic system by considering the virtual work of
a) internal forces only
b) external forces only
c) internal as well as external forces
d) none of the above
Ans: c

10. The unit of force in S.I. units is
(a) kilogram
(b) newton
(c) watt
(d) dyne
(e) joule.
Ans: b

11. The unit of work or energy in S.I. units is
(a) newton
(b) pascal
(c) kilogram meter
(d) watt
(e) joule.
Ans: e

12. The unit of power in S.I. units is
(a) newton meter
(b) watt
(c) joule
(d) kilogram meter/sec.
(e) pascal per sec.
Ans: b

13. Forces are called concurrent when their lines of action meet in
(a) one point
(b) two points
(c) plane
(d) perpendicular planes
(e) different planes.
Ans: a

14. Forces are called coplanar when all of them acting on body lie in
(a) one point
(b) one plane
(c) different planes
(d) perpendicular planes
(e) different points.
Ans: b

15. A force acting on a body may
(a) introduce internal stresses
(b) balance the other forces acting on it
(c) retard its motion
(d) change its motion
(e) all of the above.
Ans: e

16. Which is the correct statement about the law of polygon forces?
(a) if any number of forces acting at a point can be represented by the sides
of a polygon taken in order, then the forces are in equilibrium
(b) if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then
the forces are in equilibrium
(c) if a polygon representing forces acting at a point is closed then forces are in equilibrium
(d) if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in
order, then the forces are in equilibrium
(e) none of the above.
Ans: d

17. Effect of a force on a body depends upon
(a) magnitude
(b) direction
(c) position or line of action
(d) all of the above
(e) none of the above.
Ans: d

18. If a number of forces act simultaneously on
a particle, it is possible
(a) not a replace them by a single force
(b) to replace them with a single force
(c) to replace them with a single force through C.G.
(d) to replace them with a couple
(e) to replace them with a couple and a force.
Ans: b

19. A force is completely defined when we specify
(a) magnitude
(b) direction
(c) point of application
(d) all of the above
(e) none of the above.
Ans: d

20. If two equal forces of magnitude P act at an angle 9°, their results will be
(a) P/2 cos 9/2
(b) IP sin 9/2
(c) 2P tan 9/2
(d) IP cos 9/2
(e) P.sin 9/2.
Ans: d

21. The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their
resultant in the same direction. This is as per the principle of
(a) forces
(b) independence of forces
(c) dependence of forces
(d) the balance of force
(e) resolution of forces.
Ans: e

22. The resolved part of the resultant of two forces inclined at an angle 9 in a given direction is equal to
(a) the algebraic sum of the resolved parts of the forces in the given direction
(b) the sum of the resolved parts of the forces in the given direction
(c) the difference of the forces multiplied by the cosine of 9
(d) the sum of the forces multiplied by the sine of 9
(e) the sum of the forces multiplied by the tangent of 9.
Ans: a

23. Which of the following do not have identical dimensions?
(a) Momentum and impulse
(b) Torque and energy
(c) Torque and work
(d) Kinetic energy and potential energy
(e) Moment of a force and angular momentum.
Ans: e

24. Which of the following is not the unit of distance?
(a) angstrom
(b) light year
(c) micron
(d) millimetre
(e) milestone.
Ans: e

25. Which of the following is not the unit of power?
(a) kW (kilowatt)
(b) hp (horsepower)
(c) kcal/sec
(d) kg m/sec
(e) kcal/kg-sec.
Ans: e

26. Which of the following is not the unit of work, energy and heat ?
(a) kcal
(b) kg m
(c) kWhr
(d) hp
(e) hp-hr.
Ans: d

27. Which of the following is not the unit of pressure?
(a) kg/cm
(b) ata
(c) atmosphere
(d) mm of wcl
(e) newton.
Ans: e

28. The weight of a body is due to
(a) the centripetal force of the earth
(b) gravitational pull exerted by the earth
(c) forces experienced by the body in the atmosphere
(d) the force of attraction experienced by particles
(e) the gravitational force of attraction towards the centre of the earth.
Ans: e

29. The forces, which meet at one point, but their lines of action do not lie in a plane, are called
(a) coplanar non-concurrent forces
(b) non-coplanar concurrent forces
(c) non-coplanar non-concurrent forces
(d) intersecting forces
(e) none of the above.
Ans: b

30. When trying to turn a key into a lock, following is applied
(a) coplanar force
(b) non-coplanar forces
(c) lever
(d) moment
(e) couple.
Ans: e

31. Which of the following is not a scalar quantity
(a) time
(b) mass
(c) volume
(d) density
(e) acceleration.
Ans: e

32. According to principle of transmissibility of forces, the effect of a force upon a body is
(a) maximum when it acts at the centre of gravity of a body
(b) different at different points in its line of action
(c) the same at every point in its line of action
(d) minimum when it acts at the C.G. of the body
(e) none of the above.
Ans: c

33. Which of the following is a vector quantity
(a) energy
(b) mass
(c) momentum
(d) angle
(e) speed.
Ans: c

34. The magnitude of two forces, which when acting at right angle produce resultant force of VlOkg and when acting at 60°
produce resultant of Vl3 kg. These forces are
(a) 2 and V6
(b) 3 and 1 kg
(c) V5andV5
(d) 2 and 5
(e) none of the above.
Ans: c

35. A number of forces acting at a point will be in equilibrium if
(a) their total sum is zero
(b) two resolved parts in two directions at right angles are equal
(c) the sum of resolved parts in any two perpendicular directions are both zero
(d) all of them are inclined equally
(e) none of the above.
Ans: c

28. Two non-collinear parallel equal forces acting in opposite direction
(a) balance each other
(b) constitute a moment
(c) constitute a couple
(d) constitute a moment of couple
(e) constitute a resultant couple.
Ans: c

29. According to principle of moments
(a) if a system of coplanar forces is in equilibrium, then their algebraic sum is zero
(b) if a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is
zero
(c) the algebraic sum of the moments of any two forces about any point is equal to the moment of the resultant about the same
point
(d) positive and negative couples can be balanced
(e) none of the above.
Ans: b

30. Which of the following is not a vector quantity
(a) weight
(b) velocity
(c) acceleration
(d) force
(e) moment.
Ans: a

31. According to law of triangle of forces
(a) three forces acting at a point will be in equilibrium
(b) three forces acting at a point can be represented by a triangle, each side being proportional to the force
(c) if three forces acting upon a particles are represented in magnitude and direction by the sides of a triangle, taken in order,
they will be in equilibrium
(d) if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other
two
(e) none of the above.
Ans: c

32. If a rigid body is in equilibrium under the action of three forces, then
(a) these forces are equal
(b) the lines of action of these forces meet in a point
(c) the lines of action of these forces are parallel
(d) (b) and (c) above
(e) none of the above.
Ans: d

33. D' Alembert's principle is used for
(a) reducing the problem of kinetics to equivalent statics problem
(b) determining stresses in the truss
(c) stability of floating bodies
(d) designing safe structures
(e) solving kinematic problems.
Ans: a

34. A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if
(a) the floor is smooth, the wall is rough
(b) the floor is rough, the wall is smooth
(c) the floor and wall both are smooth surfaces
(d) the floor and wall both are rough surfaces
(e) will be in equilibrium under all conditions.
Ans: c

35. According to Lami's theorem
(a) three forces acting at a point will be in equilibrium
(b) three forces acting at a point can be represented by a triangle, each side being proportional to the force
(c) if three forces acting upon a particle are represented in magnitude and
direction by the sides of a triangle, taken in order, they will be in equilibrium
(d) if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other
two
(e) none of the above.
Ans: d

36. Two coplanar couples having equal and opposite moments
(a) balance each other
(b) produce a couple and an unbalanced force
(c) are equivalent
(d) produce a moment of the couple
(e) can not balance each other.
Ans: e

37. A framed structure is perfect if it contains members equal to
(a) 2n-3
(b) n-l
(c) '2n-l
(d) n - 2
(e) 3n-2.
where n = number of joints in a frame
Ans: a

39. The product of either force of couple with the arm of the couple is called
(a) resultant couple
(b) moment of the forces
(c) resulting couple
(d) moment of the couple
(e) none of the above.
Ans: d

40. In determining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section
drawn in such a way as not to cut more than
(a) two members with unknown forces of the frame
(b) three members with unknown forces of the frame
(c) four members with unknown forces of the frame
(d) three members with known forces of the frame
(e) four members with two known forces.
Ans: b

41. The centre of gravity of a uniform lamina lies at
(a) the centre of the heavy portion
(b) the bottom surface
(c) the midpoint of its axis
(d) all of the above
(e) none of the above.
Ans: c

42. Center of gravity of a solid cone lies on the axis at the height
(a) one-fourth of the total height above the base
(b) one-third of the total height above the base
(c) one-half of the total height ab the ve base
(d) three-eighth of the total height above the base
(e) none of the above.
Ans: a

43. Center of percussion is
(a) the point of C.G.
(b) the point of metacentre
(c) the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
(d) point of suspension
(e) the point in a body about which it can rotate horizontally and oscillate under the influence of gravity.
Ans: c

44. Center of gravity of a thin hollow cone lies on the axis at a height of
(a) one-fourth of the total height above base
(b) one-third of the total height above base
(c) one-half of the total height above base
(d) three-eighth of the total height above the base
(e) none of the above.
Ans: b

45. The units of moment of inertia of an area are
(a) kg m2
(b) m4
(c) kg/m2
(d) m3
(e) kg/m4.
Ans: b

46. The centre of percussion of the homogeneous rod of length L suspended at the top will be
(a) L/2
(b) L/3
(c) 3L/4
(d) 2L/3
(e) 3L/8.
Ans: d

47. Which axial force is determined while analyzing a truss?
A. compressive force
B. tensile force
C. both a. and b.
D. none of the above

Ans: C

48. If a body is subjected to plastic impact, _______
A. only kinetic energy is conserved
B. only momentum is conserved
C. both a. and b.
D. none of the above

Ans: B

Note: - Some Questions are from the Core Mechanical, You can study as per your syllabus.

MCQs on Kinetics

MCQs on Kinetics

1.) It is defined as the science which considers the effects of forces on rigid bodies
a. Kinetics
b. Engineering Mechanics
c. Statics
d. Dynamics.
Ans: B

2.) It considers the effects is distribution of forces on rigid bodies which are and remain at rest.

a. Dynamics
b. kinetics
c. statics
d. kinematics

Ans: C

3) An object of 30 kg is moved with a velocity of 2 m/s on a horizontal smooth surface. What is the velocity of the block for 4 seconds if force of 40 N is applied on it in the direction of force?

a. 2 m/s
b. 4.6 m/s
c. 7.33 m/s
d. 9.33 m/s

Ans: C




4) If two objects of 30 kg and 10 kg move with equal kinetic energy, then what is the ratio of magnitudes for linear momentum?

a. √3 : 1
b. 1 : √3
c. 1 : 3√3
d. 1 : 3

Ans A

5) The total momentum of a system __________, if no external impressed force acts on it.

a. increases
b. decreases
c. remains constant
d. none of the above

Ans:C

6) According to the principle of conservation of energy, under the action of _________ force, the sum of P.E and K.E of a particle remains constant.

a. conservative force
b. dissipative force
c. frictional force
d. air resistance force

Ans: A

7) Work done by an engine in 6 sec is 1000 joules. What is the power generated by the engine in watt?

a. 1600 watt
b. 600 watt
c. 166 watt
d. 600 watt

Ans: C

8) If a particle of mass 5 kg moves uniformly along a circle of radius 10 m at 10 m/s, then what is the work done by centripetal force during its one revolution?

a. 0.5 kNm
b. zero
c. infinity
d. none of the above

Ans: B

9) A block is displaced by 3 m when a force of 200 N is applied on it on an inclined surface which is at an angle of 50o with the horizontal. What is the work done?

a. 385.67 Nm
b. 459.62 Nm
c. 933.00 Nm
d. Insufficient data

Ans:A

10) What is the momentum of a body of 2 kg at its highest point, when thrown with a velocity of 15 m/s at an angle of of 70o with the horizontal?

a. 9.23 kg ms-1
b. 10.26 kg ms-1
c. 28.19 kg ms-1
d. None of the above

Ans:B

11) What is the minimum velocity attained by a ball thrown with velocity of 20 m/s at an angle of 40owith the horizontal?

a. 15.32 m/s
b. 12.85 m/s
c. 16.78 m/s
d. None of the above

Ans: A

12) A stone undergoes projectile motion when thrown from top of the building. If it strikes the ground surface at a distance away from the building then its horizontal direction is __________

a. less than range
b. more than range
c. same as range
d. unpredictable

Ans:B

13) A ball is thrown on an inclined surface PQ with a velocity of 50 m/s. What is the range on the plane if the ball is thrown in upward direction? ( θ = 20o, α = 35o)



a. 159.32 m
b. 200.12 m
c. 218.89 m
d. 221.31 m

Ans:C

14) The radial component of velocity for a particle moving in circular path is ______

a. constant
b. radius itself
c. variable
d. zero

Ans:D

15) The radius of curvature of trajectory for a profile is minimum, if __________

a. velocity is minimum
b. acceleration is maximum
c. both a. and b.
d. none of the above

Ans:C

16) What is the position of a particle A, if it moves along a path y = 2x3 / 3 with uniform velocity of 15 m/s?

( Assume vx = vy)

a. (0.33, 0.5)
b. (0.235, 0.707)
c. (0.577, 20.33)
d. (0.707, 0.235)

Ans:D

17) If a particle moves along a curved path, then what will be the normal component of velocity acting on the particle, if magnitude of tangential component of velocity is 30 m/s at an angle of 50o with the vertical?

a. 57.8 m/s
b. 68.9 m/s
c. 40.2 m/s
d. None of the above

Ans:D

18) If an elevator travels at constant velocity, the normal reaction R is given as ______

a. m (g +a)
b. m (g - a)
c. mg
d. ma

Ans:C

19) Force of 150 N moves a body in 5 sec along a straight line according to x = t3 - 60t. What is the mass of the moving body?

a. 17.23 kg
b. 15.23 kg
c. 15 kg
d. 5 kg

Ans:D

20) A block sliding down an inclined plane has acceleration _________ acceleration due to gravity.

a. less than
b. greater than
c. same as
d. none of the above

Ans:A

21) What is the average resistance required to stop a truck of mass 600 kg in a distance of 30 m, if initial speed is 30 m/sec?

a. 8000 N
b. 9 kN
c. 9.5 kN
d. 9 N

Ans:D

22) What is the distance traveled by an electron in first 4 seconds from its initial position, if velocity time relation is given as v = 3t?

a. 12 m
b. 15 m
c. 20 m
d. 24 m

Ans:D

23) A ball dropped from a wall of height h travels a distance of 50 m in last two seconds before landing. What is the height of the wall from which the ball was dropped?

a. 120.15 m
b. 127.37 m
c. 183.48 m
d. Insufficient data

Ans:B

24) A bus travels with a speed of 15 m/s when accelerated at 0.10 m/s2 from its rest position. What is the distance traveled?

a. 1125 m
b. 1000 m
c. 2250 m
d. None of the above

Ans:A

25) When acceleration is _______, velocity of a particle is constant.

a. constant but non zero
b. maximum
c. zero
d. none of the above

Ans:C

26) Which method is used to determine centroid of a composite figure?

a. Analytical method
b. Graphical method
c. Both a. and b.
d. None of the above

Ans:C

27) What is the distance of centroid with respect to diagonal shown in diagram below?



a. a /√3
b. a /√2
c. a /√18
d. 3a /√2

Ans:C

28) What is the centroidal distance of an equilateral triangle of side 2 m?

a. 0.866 m
b. 0.769 m
c. 1.000 m
d. 0.577 m

Ans:A

29) What is the reaction acting on point Q, for the simply supported beam shown below?



a. 5 N (↑)
b. 10 N (↑)
c. 10 N (↓)
d. 40 N (↓)

Ans:A

30) Which of the following statements is false about forces/couple?

a. Moment of the couple is free vector
b. Resultant and equilibrant are equal in magnitude and direction
c. Resultant of a couple is always zero
d. Parallelogram law is to be proved experimentally

Ans:B

31) The method of splitting a single force into two perpendicular components along x-axis and y-axis is called as _____

a. orthogonal resolution
b. perpendicular resolution
c. both a. and b.
d. none of the above

Ans:C

32) What is the angle made by force A with X and Y ?

(where X and Y are components of force A)

a. 75.52o
b. 60.65o
c. 14.03o
d. 14.47o

Ans:A

33) The maximum and minimum magnitude of resultant forces is 1000 N and 500 N at point. What are the values of two forces acting on it?

a. 500 N, 500 N
b. 450 N, 550 N
c. 300 N, 700 N
d. 250 N, 750 N

Ans:D

34) Which of the following statements is true for flat belts?

a. They are used for short distances between the pulleys
b. They have high efficiency
c. They are used in lathe machines
d. All of the above

Ans:C

35) What is the relation between tight side and slack side for a flat belt?

a. (Tight side x slack side) = e^μβ
b. (Tight side / slack side) = e^μβ
c. (Tight side + slack side) = e^μβ
d. None of the above

Ans:C

36) Which belt is used to transmit power at high speeds?

a. Flat belt
b. V belt
c. Both a. and b.
d. None of the above

Ans:B

37) If a truss consists of 8 joints, 10 members and 4 reaction components then, it is a __________

a. cantilever truss
b. defficient truss
c. redundant truss
d. none of the above

Ans:B

38) Which of the following conditions is satisfied for cantilever truss?

a. n > 2j – R
b. n < 2j – R
c. n = 2j – R
d. n ≠ 2j – R

Ans:C

39) Redundant truss is a type of ______

a. perfect truss
b. imperfect truss
c. stable truss
d. none of the above

Ans:B

40) Indeterminate structures have the number of unknown quantities _________ available conditions of equilibrium.

a. equal to
b. less than
c. more than
d. none of the above

Ans:C

41) Cantilever beam has one end _________ and other end _______.

a. hinged, free
b. fixed, free
c. fixed, hinged
d. none of the above

Ans: B

42) Coefficient of restitution is the ratio of impulse during __________

a. plastic deformation and elastic deformation
b. elastic deformation and plastic deformation
c. restoration period and deformation period
d. deformation period and restoration period

Ans:C

43) If coefficient of restitution is zero during plastic impact, then ___________

a. kinetic energy is conserved
b. momentum energy is conserved
c. bodies move away after impact
d. all of the above

Ans:B

44) What is the coefficient of restitution (e) for elastic impact?

a. e = 0
b. e = 1
c. e < 0
d. e > 1

Ans:B

45) Which of the following force(s) is a type of conservative force?

a. Frictional force
b. Gravity force
c. Both a. and b.
d. None of the above

Ans:B

46) What is the S.I unit of work done?

a. Joule
b. Newton meter
c. Both a. and b.
d. None of the above

Ans: C

47) Which of the following factors are related by work energy principle?

a. force, displacement and time
b. force, velocity, time and mass
c. force, velocity, displacement
d. displacement, time and mass

Ans: C

48) What is the kinetic energy at the highest point, if at an angle of 30o with the horizontal a ball is projected with a kinetic energy E?

a. E / 2
b. E / √2
c. 5E / 4
d. 3E / 4

Ans:D

49) What is the angle of projection for a bullet fired over a horizontal plane, when horizontal range is equal to 4 times the maximum height?

a. 30o
b. 45o
c. 76o
d. 90o

Ans:B

50) The angle of projection is 76o over a horizontal plane, if horizontal range (R) is equal to ________

A. maximum height (Hmax)
B. 4 maximum height (Hmax)
C. √3 maximum height (Hmax)
D. 4√3 maximum height (Hmax)

Ans: A

Disabled people have right to get higher education: says SC

Disabled people have right to get higher education: says SC

The Supreme Court has passed a command communicating that people with insufficiencies moreover have a benefit to cutting edge training.

Every person who is particularly abled have a benefit to get propelled training and not making adequate game plans to support their fitting direction would signify "isolation", the Supreme Court said today. It composed the organization establishments of cutting-edge training and other such foundations, which were tolerating guide from the governing body, to consent to the courses of action of the Rights of Persons with Disabilities Act, 2016. The Act suits reservation of no under five for every penny seats for people with benchmark idiocies. A seat of judges A K Sikri and Ashok Bhushan said that true blue fundamental activity under the approaches of the Act would be started against the defaulting instructive affiliations.

It asked the University Grants Commission (UGC) to constitute a board to think about the achievability of having rules for the openness of understudies with idiocies in schools and schools. It said the main gathering of trustees would get a handle on a point by the control to think toward making arrangements in regard of straightforwardness and work environments of educating for debilitated people and would in like way recommend the modalities for executing those recommendations, their supporting and checking.

"The ace leading group of trustees may in like manner think about constituting an in-house body in each enlightening foundation (of teachers, staff, understudies and gatekeepers) for managing ordinary necessities of differently abled individuals and for the execution of the plans that would be detailed by the ace warning gathering," the seat said. They furthermore incorporated that the action is done by June 30 one year from now. It said that a move made the report in such way is set before it in July 2018. The court's decision continued a supplication which had raised three key issues, including the non-usage of reservation of seats in instructive foundations as gave in the Act and strategy for legitimate access to orthopedically impaired people so enable them to uninhibitedly move in useful affiliations.

The seat saw that a game-plan under the 2016 Act furnished that people with benchmark inadequacies might be given an upper age slackening up of five years for authentication in the relationship of forefront preparing. "In like way, we organize that each one of those foundations which are anchored by the duties gave under Section 32 of the Disabilities Act, 2016 will consent to the game plans of Section 32 while making an affirmation of understudies in informative courses of cutting-edge training each year," it said. The court said that such educational establishments will exhibit a summary of the number of weakened individuals surrendered in each course every year to the focal boss or state official.

It is like manner ensured that it has raised the essential issue of influencing a level playing to handle where each one of the subjects has the value of sensible opportunities to enable them to comprehend their most extreme limit and experience thriving. "To ensure the level-playing field, it isn't only fundamental to give basic direction to the general population encountering the incapacitate, it is in like manner essential to see that such preparing is presented to them gainfully," it said.

"Not influencing adequate courses of action to urge fitting guideline to such to individuals, in this way, would signify isolation," it said. The seat said that such need was to ensure that an understudy with disabling, after suitable preparing, would have the ability to lead a free, monetarily autonomous and totally

Participatory life. 

Moreover, as for the law colleges, the court said hint with respect to the number of affirmations given to debilitated understudies is sent to the Bar Council of India (BCI). "Other educational establishments will tell the consistency, consistently, to the UGC. It will be inside the vigilance of the BCI and UGC to finish examinations of such educational establishments to affirm in the matter of whether the courses of action are complied with or not," it said.