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 25 of 31

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Q241.
If a number of forces are acting at a point, their resultant is given by

a.

tanθ = ΣH/ΣV

b.

tanθ = ΣV/ΣH

c.

tanθ = ΣV × ΣH

d.

tanθ = √(ΣV + ΣH)

Discuss
Answer: (b).tanθ = ΣV/ΣH
Q242.
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
Q243.
Joule is the unit of

a.

force

b.

work

c.

power

d.

velocity

Discuss
Answer: (b).work
Q244.
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
Q245.
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
Q246.
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
Q247.
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
Q248.
Non-coplaner non-concurrent forces are those forces which

a.

meet at one point, but their lines of action do not lie on the same plane

b.

do not meet at one point and their lines of action do not lie on the same plane

c.

do not meet at one point but their lines of action lie on the same plane

d.

none of the above

Discuss
Answer: (b).do not meet at one point and their lines of action do not lie on the same plane
Q249.
The forces which meet at one point, but their lines of action __________ on the same plane, are Known as non-coplaner concurrent forces.

a.

lie

b.

do not lie

c.

Can't say

d.

None of these

Discuss
Answer: (b).do not lie
Q250.
A force while acting on a body may

a.

change its motion

b.

balance the forces, already acting on it

c.

give rise to the internal stresses in it

d.

all of these

Discuss
Answer: (d).all of these
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