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 38 of 48

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Q371.
A system of masses rotating in different parallel planes is in dynamic balance if the

a.

resultance force is equal to zero

b.

resultant couple is equal to zero

c.

resultant force and resultant couple are both equal to zero

d.

resultant force is numerically equal to the resultant couple, but neither of them need necessarily be zero

Discuss
Answer: (c).resultant force and resultant couple are both equal to zero
Q372.
The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called

a.

dedendum

b.

addendum

c.

clearance

d.

working depth

Discuss
Answer: (c).clearance
Q373.
A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become

a.

fn/2

b.

2 fn

c.

4 fn

d.

8 fn

Discuss
Answer: (a).fn/2
Q374.
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is

a.

ฮผ W cosec ฮฑ (r1 + r2)

b.

ฮผ W cosec ฮฑ (r1 + r2)

c.

ฮผ W cosec ฮฑ

d.

ฮผ W cosec ฮฑ

Discuss
Answer: (d).ฮผ W cosec ฮฑ
Q375.
In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring)

a.

(Sโ‚ + Sโ‚‚) / h

b.

(Sโ‚ - Sโ‚‚) / h

c.

(Sโ‚ + Sโ‚‚) / 2h

d.

(Sโ‚ - Sโ‚‚) / 2h

Discuss
Answer: (b).(Sโ‚ - Sโ‚‚) / h
Q376.
The relation between the controlling force (Fc) and radius of rotation (r) for a stable spring controlled governor is

a.

Fc = ar + b

b.

Fc = ar - b

c.

Fc = ar

d.

Fc = a/r + b

Discuss
Answer: (b).Fc = ar - b
Q377.
A rotary internal combustion engine has __________ cylinders.

a.

four

b.

five

c.

six

d.

seven

Discuss
Answer: (d).seven
Q378.
The power transmitted by a belt is maximum when the maximum tension in the belt is __________ of centrifugal tension.

a.

one-third

b.

two-third

c.

double

d.

three times

Discuss
Answer: (d).three times
Q379.
A slider moves at a velocity v on a link revolving at ฯ‰ rad/s. The coriolis component of acceleration is

a.

ฯ‰v

b.

2 ฯ‰v

c.

ฯ‰²v

d.

2 ฯ‰v2

Discuss
Answer: (b).2 ฯ‰v
Q380.
The effort of a Porter governor is equal to (where c = Percentage increase in speed, m = Mass of ball, and M = Mass on the sleeve)

a.

c(m - M)g

b.

c(m + M)g

c.

c(m.M)g

d.

None of these

Discuss
Answer: (b).c(m + M)g
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