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!

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Theory of machines MCQs | Page 6 of 48

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Q51.
A reed type tachometer use the principle of

a.

longitudinal vibration

b.

torsional vibration

c.

transverse vibration

d.

damped free vibration

Discuss
Answer: (c).transverse vibration
Q52.
The natural frequency of free transverse vibrations due to a point load acting over a simply supported shaft is equal to (where ฮด = Static deflection of a simply supported shaft due to the point load)

a.

0.4985/ โˆšฮด

b.

0.5615/ โˆšฮด

c.

0.571/ โˆšฮด

d.

0.6253/ โˆšฮด

Discuss
Answer: (b).0.5615/ โˆšฮด
Q53.
When the sleeve of a Porter governor moves upwards, the governor speed

a.

increases

b.

decreases

c.

remains unaffected

d.

first increases and then decreases

Discuss
Answer: (a).increases
Q54.
The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by (where OQ = Distance between the centre of circular flank and centre of nose)

a.

ฯ‰² x OQ

b.

ฯ‰² x OQ sin ฮธ

c.

ฯ‰² x OQ cos ฮธ

d.

ฯ‰² x OQ tan ฮธ

Discuss
Answer: (a).ฯ‰² x OQ
Q55.
A thin circular disc is rolling with a uniform linear speed, along a straight path on a plane surface. Which of the following statement is correct in this regard ?

a.

All points of the disc have the same velocity

b.

The centre of the disc has zero acceleration

c.

The centre of the disc has centrifugal acceleration

d.

The point on the disc making contact with the plane surface has zero acceleration

Discuss
Answer: (b).The centre of the disc has zero acceleration
Q56.
A body will begin to move down an inclined plane, if the angle of inclination of the plane is __________ the angle of friction.

a.

equal to

b.

less than

c.

greater than

d.

None of these

Discuss
Answer: (c).greater than
Q57.
The fundamental equation for correct steering is (where ฯ† and ฮฑ = Angle through which the axis of the outer wheel and inner wheel turns respectively, c = Distance between the pivots of the front axles, and d = Wheel base)

a.

sin ฯ† + sin ฮฑ = b/c

b.

cos ฯ† - sin ฮฑ = c/b

c.

cot ฯ† - cot ฮฑ = c/b

d.

tan ฯ† + cot ฮฑ = b/c

Discuss
Answer: (c).cot ฯ† - cot ฮฑ = c/b
Q58.
The height of a Watt's governor is

a.

directly proportional to speed

b.

directly proportional to (speed)²

c.

inversely proportional to speed

d.

inversely proportional to (speed)²

Discuss
Answer: (d).inversely proportional to (speed)²
Q59.
For an isochronous Hartnell governor (where r1 and r2 = Maximum and minimum radius of rotation of balls respectively, S1 and S2 = Maximum and minimum force exerted on the sleeve respectively, and M = Mass on the sleeve)

a.

(m.g + Sโ‚)/(m.g + Sโ‚‚) = rโ‚/rโ‚‚

b.

(m.g - Sโ‚)/(m.g - Sโ‚‚) = rโ‚‚/rโ‚

c.

Sโ‚/Sโ‚‚ = rโ‚/rโ‚‚

d.

Sโ‚‚/Sโ‚ = rโ‚/rโ‚‚

Discuss
Answer: (a).(m.g + Sโ‚)/(m.g + Sโ‚‚) = rโ‚/rโ‚‚
Q60.
Which of the following statement is correct ?

a.

The periodic time of a particle moving with simple harmonic motion is the time taken by a particle for one complete oscillation.

b.

The periodic time of a particle moving with simple harmonic motion is directly proportional to its angular velocity.

c.

The velocity of a particle moving with simple harmonic motion is zero at the mean position.

d.

The acceleration of the particle moving with simple harmonic motion is maximum at the mean position.

Discuss
Answer: (a).The periodic time of a particle moving with simple harmonic motion is the time taken by a particle for one complete oscillation.
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