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 9 of 31

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Q81.
In ideal machines, mechanical advantage is __________ velocity ratio.

a.

equal to

b.

less than

c.

greater than

d.

None of these

Discuss
Answer: (a).equal to
Q82.
The minimum force required to slide a body of weight W on a rough horizontal plane is

a.

W sin ฮธ

b.

W cos ฮธ

c.

W tan ฮธ

d.

none of these

Discuss
Answer: (c).W tan ฮธ
Q83.
The moment of inertia of a square of side a about its diagonal is

a.

a2/8

b.

a3/12

c.

a4/12

d.

a4/16

Discuss
Answer: (c).a4/12
Q84.
The angular velocity (in rad / s) of a body rotating at N revolutions per minute is

a.

ฯ€N/60

b.

ฯ€N/180

c.

2ฯ€N/60

d.

2ฯ€N/180

Discuss
Answer: (c).2ฯ€N/60
Q85.
The maximum efficiency of a lifting machine is

a.

1/m

b.

V.R./m

c.

m/V.R.

d.

1/(m x V.R.)

Discuss
Answer: (d).1/(m x V.R.)
Q86.
A machine having an efficiency less than 50%, is known as

a.

reversible machine

b.

non-reversible machine

c.

neither reversible nor non-reversible machine

d.

ideal machine

Discuss
Answer: (b).non-reversible machine
Q87.
The total momentum of a system of masses (i. e. moving bodies) in any one direction remains constant, unless acted upon by an external force in that direction. This statement is called

a.

Newton's first law of motion

b.

Newton's second law of motion

c.

principle of conservation of energy

d.

principle of conservation of momentum

Discuss
Answer: (d).principle of conservation of momentum
Q88.
The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

a.

D/(D + d)

b.

D/(D - d)

c.

2D/(D - d)

d.

2D/(D + d)

Discuss
Answer: (c).2D/(D - d)
Q89.
The unit of mass moment of inertia in S.I. units is kg-m².

a.

True

b.

False

c.

Can't say

d.

None of these

Discuss
Answer: (a).True
Q90.
The moment of inertia of a solid cylinder of mass m, radius r and length l about the longitudinal axis or polar axis is

a.

mr2/2

b.

mr2/4

c.

mr2/6

d.

mr2/8

Discuss
Answer: (a).mr2/2
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