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 5 of 48

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Q41.
The pair is known as a higher pair, when the relative motion between the elements of a pair is

a.

turning only

b.

sliding only

c.

rolling only

d.

partly turning and partly sliding

Discuss
Answer: (d).partly turning and partly sliding
Q42.
When the connection between the two elements is such that only required kind of relative motion occurs, it is known as self-closed pair.

a.

Right

b.

Wrong

c.

Can't say

d.

None of these

Discuss
Answer: (a).Right
Q43.
The Whitworth quick return motion mechanism is formed in a slider crank chain when the

a.

coupler link is fixed

b.

longest link is a fixed link

c.

slider is a fixed link

d.

smallest link is a fixed link

Discuss
Answer: (a).coupler link is fixed
Q44.
The primary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is

a.

0° and 90°

b.

0° and 180°

c.

90° and 180°

d.

180° and 360°

Discuss
Answer: (b).0° and 180°
Q45.
Two pulleys of radii r1 and r2 and at distance x apart are connected by means of a cross belt drive. The length of the belt is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q46.
A shaft of mass (mc) and stiffness (s) is fixed at one end and carries a mass (m) at the other end. The natural frequency of its longitudinal vibration is equal to

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (d).D
Q47.
The ratio of velocities of the shafts connected by Hooke's joint is given by (where N and N1 = Speed of driving and driven shafts (in r.p.m.) respectively, ฮธ = Angle through which the arms of the cross turn, and ฮฑ = Angle of inclination between the two shafts)

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q48.
In under damped vibrating system, if x1 and x2 are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q49.
For a twin cylinder V-engine, the crank positions for primary reverse cranks and secondary direct cranks are shown in the below figure. The engine is a

a.

30° V-engine

b.

60° V-engine

c.

120° V-engine

d.

150° V-engine

Discuss
Answer: (a).30° V-engine
Q50.
The acceleration of the particle moving with simple harmonic motion is inversely proportional to the displacement of the particle from the mean position.

a.

Yes

b.

No

c.

Can't say

d.

None of these

Discuss
Answer: (b).No
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