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 12 of 31

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Q111.
The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of ฮฑ rad / s², is

a.

a = ฮฑ/ r

b.

a = ฮฑ.r

c.

a = r / ฮฑ

d.

none of these

Discuss
Answer: (b).a = ฮฑ.r
Q112.
The total energy possessed by a system of moving bodies

a.

is constant at every instant

b.

varies from point to point

c.

is maximum in the start and minimum at the end

d.

is minimum in the start and maximum at the end

Discuss
Answer: (a).is constant at every instant
Q113.
The polygon law of forces states that if a number of forces, acting simultaneously on a particle, be represented in magnitude and direction by the sides a polygon taken in order, then their resultant is represented in magnitude and direction by the closing side of the polygon, taken in opposite direction.

a.

Correct

b.

Incorrect

c.

Can't say

d.

None of these

Discuss
Answer: (a).Correct
Q114.
The below figure shows the two equal forces at right angles acting at a point. The value of force R acting along their bisector and in opposite direction is

a.

P/2

b.

2P

c.

โˆš2P

d.

P/โˆš2

Discuss
Answer: (c).โˆš2P
Q115.
The moment of the force P about O as shown in the below figure is

a.

P x OA

b.

P x OB

c.

P x OC

d.

P x AC

Discuss
Answer: (c).P x OC
Q116.
Moment of inertia of a hollow circular section, as shown in the below figure about an axis perpendicular to the section, is __________ than that about X-X axis.

a.

two times

b.

same

c.

half

d.

None of the above

Discuss
Answer: (a).two times
Q117.
The time of flight (t) of a projectile on an upward inclined plane is(where u = Velocity of projection, ฮฑ = Angle of projection, and ฮฒ = Inclination of the plane with the horizontal.)

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q118.
Two bodies of masses m1,and m2 are hung from the ends of a rope, passing oyer a frictionless pulley as shown in the figure below. The acceleration of the string will be

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q119.
A smooth cylinder lying on a __________ is in neutral equilibrium.

a.

curved surface

b.

convex surface

c.

horizontal surface

d.

None of these

Discuss
Answer: (c).horizontal surface
Q120.
The velocity of a particle (v) moving with simple harmonic motion, at any instant is given by(where r = Amplitude of motion, and y = Displacement of the particle from mean position.)

a.

ฯ‰.โˆš(y² - r²)

b.

ฯ‰.โˆš(r² - y²)

c.

ฯ‰².โˆš(y² - r²)

d.

ฯ‰².โˆš(r² - y²)

Discuss
Answer: (b).ฯ‰.โˆš(r² - y²)
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