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 16 of 31

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Q151.
The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

a.

mr²/3

b.

2mr²/3

c.

2mr²/5

d.

3mr²/5

Discuss
Answer: (b).2mr²/3
Q152.
The resultant of two forces P and Q (such that P > Q) acting along the same straight line, but in opposite direction, is given by

a.

P + Q

b.

P - Q

c.

P / Q

d.

Q / P

Discuss
Answer: (b).P - Q
Q153.
Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to

a.

area of the triangle

b.

twice the area of the triangle

c.

half the area of the triangle

d.

none of these

Discuss
Answer: (b).twice the area of the triangle
Q154.
If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

a.

g/2

b.

g/3

c.

g/4

d.

none of these

Discuss
Answer: (d).none of these
Q155.
Efficiency of a screw jack is given by(where Ξ± = Helix angle, and Ο† = Angle of friction.)

a.

tan(Ξ± + Ο†)/tanΞ±

b.

tanΞ±/tan (Ξ± + Ο†)

c.

tan(Ξ± - Ο†)/tanΞ±

d.

None of these

Discuss
Answer: (b).tanΞ±/tan (Ξ± + Ο†)
Q156.
When a train is rounding a curve, the side thrust on the wheel flanges is prevented by raising the outer edge of the rail.

a.

Yes

b.

No

c.

Can't say

d.

None of these

Discuss
Answer: (a).Yes
Q157.
Frequency of vibrations means the number of cycles per second.

a.

Yes

b.

No

c.

Can't say

d.

None of these

Discuss
Answer: (a).Yes
Q158.
The time taken by a particle for one complete oscillation is known as periodic time.

a.

Agree

b.

Disagree

c.

Can't say

d.

None of these

Discuss
Answer: (a).Agree
Q159.
The velocity ratio of a first system of pulleys with 4 pulleys is

a.

4

b.

8

c.

16

d.

20

Discuss
Answer: (c).16
Q160.
One joule means that

a.

work is done by a force of 1 N when it displaces a body through 1m

b.

work is done by a force of 1 kg when it displaces a body through 1 m

c.

work is done by a force of 1 dyne when it displaces a body through 1 cm

d.

work is done by a force of 1 g when it displaces a body through 1 cm

Discuss
Answer: (a).work is done by a force of 1 N when it displaces a body through 1m
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