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 α rad / s², is

a.

a = α/ r

b.

a = α.r

c.

a = r / α

d.

none of these

Discuss
Answer: (b).a = α.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.
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
Q115.
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.

ω.√(y² - r²)

b.

ω.√(r² - y²)

c.

ω².√(y² - r²)

d.

ω².√(r² - y²)

Discuss
Answer: (b).ω.√(r² - y²)
Q116.
Varingon's theorem of moments states that if a number of coplaner forces acting on a particle are in equilibrium, then

a.

their algebraic sum is zero

b.

their lines of action are at equal distances

c.

the algebraic sum of their moments about any point in their plane is zero

d.

the algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point.

Discuss
Answer: (d).the algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point.
Q117.
The loss of kinetic energy during inelastic impact, is given by(where m1 = Mass of the first body,m2 = Mass of the second body, and u1 and u2 = Velocities of the first and second bodies respectively.)

a.

[m₁ m₂/2(m₁ + m₂)] (u₁ - u₂)²

b.

[2(m₁ + m₂)/m₁ m₂] (u₁ - u₂)²

c.

[m₁ m₂/2(m₁ + m₂)] (u₁² - u₂²)

d.

[2(m₁ + m₂)/m₁ m₂] (u₁² - u₂²)

Discuss
Answer: (a).[m₁ m₂/2(m₁ + m₂)] (u₁ - u₂)²
Q118.
The centre of gravity of a hemisphere lies at a distance of 3r / 8 from its base measured along the vertical radius.

a.

Correct

b.

Incorrect

c.

Can't say

d.

None of these

Discuss
Answer: (a).Correct
Q119.
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the depth (d), is

a.

db³/12

b.

bd³/12

c.

db³/36

d.

bd³/36

Discuss
Answer: (a).db³/12
Q120.
The centre of oscillation and centre of suspension for a compound pendulum are interchangeable.

a.

True

b.

False

c.

Can't say

d.

None of these

Discuss
Answer: (a).True
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