Engineering Mechanics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Engineering Mechanics, a fundamental topic in the field of Mechanical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Engineering Mechanics MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Engineering Mechanics mcq questions that explore various aspects of Engineering Mechanics problems. Each MCQ is crafted to challenge your understanding of Engineering Mechanics principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Mechanical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Engineering Mechanics MCQs are your pathway to success in mastering this essential Mechanical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Engineering Mechanics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Engineering Mechanics knowledge to the test? Let's get started with our carefully curated MCQs!

Engineering Mechanics MCQs | Page 27 of 31

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Q261.
The moment of inertia of a thin rod of mass m and length l,about an axis through its centre of gravity and perpendicular to its length is

a.

ml²/4

b.

ml²/ 6

c.

ml²/8

d.

ml²/12

Discuss
Answer: (d).ml²/12
Q262.
When a body of mass m attains a velocity v from rest in time t, then the kinetic energy of translation is

a.

mv2

b.

mgv2

c.

0.5 mv2

d.

0.5 mgv2

Discuss
Answer: (c).0.5 mv2
Q263.
The unit of angular velocity is

a.

m/min

b.

rad/s

c.

revolutions/min

d.

both b and c

Discuss
Answer: (d).both b and c
Q264.
If a number of forces are acting at a point, their resultant is given by

a.

tanΞΈ = Ξ£H/Ξ£V

b.

tanΞΈ = Ξ£V/Ξ£H

c.

tanΞΈ = Ξ£V × Ξ£H

d.

tanθ = √(ΣV + ΣH)

Discuss
Answer: (b).tanΞΈ = Ξ£V/Ξ£H
Q265.
A force acting in the opposite direction to the motion of the body is called force of friction.

a.

Agree

b.

Disagree

c.

Can't say

d.

None of these

Discuss
Answer: (a).Agree
Q266.
Joule is the unit of

a.

force

b.

work

c.

power

d.

velocity

Discuss
Answer: (b).work
Q267.
A spherical body is symmetrical about its perpendicular axis. According to Routh's rule, the moment of inertia of a body about an axis passing through its centre of gravity is(where, M = Mass of the body, and S = Sum of the squares of the two semi-axes.)

a.

MS/3

b.

MS/4

c.

MS/5

d.

none of these

Discuss
Answer: (c).MS/5
Q268.
The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as

a.

coplaner concurrent forces

b.

coplaner non-concurrent forces

c.

like parallel forces

d.

unlike parallel forces

Discuss
Answer: (d).unlike parallel forces
Q269.
The efficiency of a lifting machine is the ratio of

a.

output to the input

b.

work done by the machine to the work done on the machine

c.

mechanical advantage to the velocity ratio

d.

all of the above

Discuss
Answer: (d).all of the above
Q270.
If the efficiency of a lifting machine is kept constant, its velocity ratio is __________ propotional to its mechanical advantage.

a.

directly

b.

inversely

c.

Can't say

d.

None of these

Discuss
Answer: (a).directly
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