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.
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
Q32.
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
Q33.
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)
Q34.
In a screw jack, the effort required to lower the load W is given by

a.

P = W tan(α - φ)

b.

P = W tan(α + φ)

c.

P = W tan(φ - α)

d.

P = W cos(α + φ)

Discuss
Answer: (c).P = W tan(φ - α)
Q35.
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
Q36.
If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

a.

0°

b.

90°

c.

180°

d.

360°

Discuss
Answer: (c).180°
Q37.
In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

a.

total lift, total angle of lift, minimum radius of cam and cam speed

b.

radius of circular arc, cam speed, location of centre of circular arc and roller diameter

c.

mass of cam follower linkage, spring stiffness and cam speed

d.

total lift, centre of gravity of the cam and cam speed

Discuss
Answer: (a).total lift, total angle of lift, minimum radius of cam and cam speed
Q38.
When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be

a.

stable

b.

unstable

c.

isochronous

d.

none of these

Discuss
Answer: (b).unstable
Q39.
The factor which affects the critical speed of a shaft is

a.

diameter of disc

b.

span of shaft

c.

eccentricity

d.

all of these

Discuss
Answer: (d).all of these
Q40.
The partial balancing of reciprocating parts in locomotives produces

a.

hammer blow

b.

swaying couple

c.

variation in tractive force along the line of stroke

d.

all of the above

Discuss
Answer: (d).all of the above
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