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 4 of 48

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Q31.
In a coupling rod of a locomotive, each of the four pairs is a __________ pair.

a.

sliding

b.

turning

c.

rolling

d.

screw

Discuss
Answer: (b).turning
Q32.
The sliding pairs, turning pairs and screw pairs form lower pairs.

a.

True

b.

False

c.

Can't say

d.

None of these

Discuss
Answer: (a).True
Q33.
When a particle moves round the circumference of a circle of radius r with ฯ‰ rad/s, then its maximum acceleration is ฯ‰²r.

a.

Right

b.

Wrong

c.

Can't say

d.

None of these

Discuss
Answer: (a).Right
Q34.
A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of

a.

2 mm

b.

2.22 mm

c.

2.50 mm

d.

3.0 mm

Discuss
Answer: (b).2.22 mm
Q35.
The swaying couple is maximum or minimum when the angle of inclination of the crank to the line of stroke (ฮธ) is equal to

a.

90° and 180°

b.

45° and 225°

c.

180° and 270°

d.

270° and 360°

Discuss
Answer: (b).45° and 225°
Q36.
The pressure angle of a cam is the angle between the direction of the follower motion and a normal to the

a.

pitch circle

b.

base circle

c.

pitch curve

d.

prime circle

Discuss
Answer: (c).pitch curve
Q37.
A pair of friction discs is an example of rolling pair.

a.

True

b.

False

c.

Can't say

d.

None of these

Discuss
Answer: (b).False
Q38.
In order to balance the reciprocating masses,

a.

primary forces and couples must be balanced

b.

secondary forces and couples must be balanced

c.

both (a) and (b)

d.

none of these

Discuss
Answer: (c).both (a) and (b)
Q39.
In a screw jack, the effort required to lower the load W is given by

a.

P = W tan(ฮฑ - ฯ†)

b.

P = W tan(ฮฑ + ฯ†)

c.

P = W tan(ฯ† - ฮฑ)

d.

P = W cos(ฮฑ + ฯ†)

Discuss
Answer: (c).P = W tan(ฯ† - ฮฑ)
Q40.
An automobile steering gear is an example of

a.

sliding pair

b.

rolling pair

c.

lower pair

d.

higher pair

Discuss
Answer: (c).lower pair
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