Theory of machines MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Theory of machines, 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 Theory of machines 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 Theory of machines mcq questions that explore various aspects of Theory of machines problems. Each MCQ is crafted to challenge your understanding of Theory of machines 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 Theory of machines 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 Theory of machines. 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 Theory of machines knowledge to the test? Let's get started with our carefully curated MCQs!

Theory of machines MCQs | Page 1 of 48

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Q1.
The gears are termed as medium velocity gears, if their peripheral velocity is

a.

1 - 3 m/s

b.

3 - 15 m/s

c.

15 - 30 m/s

d.

30 - 50 m/s

Discuss
Answer: (b).3 - 15 m/s
Q2.
The frequency of damped vibrations with viscous damping is __________ the frequency of undamped vibrations.

a.

more than

b.

less than

c.

same as

d.

None of these

Discuss
Answer: (b).less than
Q3.
Whitworth quick return motion mechanism consists of three turning pairs and one sliding pair.

a.

Right

b.

Wrong

c.

Can't say

d.

None of these

Discuss
Answer: (a).Right
Q4.
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a right turn. The effect of gyroscopic couple acting on it will be to raise the stern and lower the bow.

a.

Agree

b.

Disagree

c.

Can't say

d.

None of these

Discuss
Answer: (a).Agree
Q5.
In vibration isolation system, the transmissibility will be equal to unity, for all values of damping factor, if ฯ‰/ฯ‰n is

a.

equal to one

b.

equal to 2

c.

less than 2

d.

greater than 2

Discuss
Answer: (b).equal to 2
Q6.
The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ฯ‰1 rad/s in the clockwise direction and the link OB turns with angular velocity ฯ‰2 rad/s in the clockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)

a.

ฯ‰1.ฯ‰2.r

b.

( ฯ‰1 - ฯ‰2)r

c.

( ฯ‰1 + ฯ‰2)r

d.

( ฯ‰1 - ฯ‰2)2r

Discuss
Answer: (b).( ฯ‰1 - ฯ‰2)r
Q7.
If ฯ‰/ฯ‰n = 2, where co is the frequency of excitation and ฯ‰n is the natural frequency of vibrations, then the transmissibility of vibration will the

a.

0.5

b.

1

c.

1.5

d.

2

Discuss
Answer: (b).1
Q8.
A disturbing mass m1 attached to the rotating shaft may be balanced by a single mass m2 attached in the same plane of rotation as that of m1, such that (where r1 and r2 are the radii of rotation of m1 and m2 respectively)

a.

m1r2 = m2r1

b.

m1r1 = m2r2

c.

m1m2 = r1r2

d.

none of these

Discuss
Answer: (b).m1r1 = m2r2
Q9.
In railway axle boxes, the bearing used is

a.

deep groove ball bearing

b.

double row self-aligning ball bearing

c.

double row spherical roller bearing

d.

cylindrical roller bearing

Discuss
Answer: (c).double row spherical roller bearing
Q10.
The dynamic friction is the friction experienced by a body, when the body

a.

is in motion

b.

is at rest

c.

just begins to slide over the surface of the other body

d.

none of the above

Discuss
Answer: (a).is in motion
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