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 12 of 48

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Q111.
The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ฯ‰ = Angular speed of crank, r = Radius of crank, ฮธ = Angle of inclination of crank with the line of stroke, and n = Ratio of the lengm of connecting rod to radius of crank)

a.

m.ฯ‰².r sin ฮธ

b.

m.ฯ‰².r cos ฮธ

c.

m.ฯ‰².r

d.

m.ฯ‰².r

Discuss
Answer: (b).m.ฯ‰².r cos ฮธ
Q112.
For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that

a.

governor A is more sensitive than governor B

b.

governor B is more sensitive than governor A

c.

both governors A and B are equally sensitive

d.

none of the above

Discuss
Answer: (a).governor A is more sensitive than governor B
Q113.
The component of the acceleration, parallel to the velocity of the particle, at the given instant is called

a.

radial component

b.

tangential component

c.

coriolis component

d.

none of these

Discuss
Answer: (b).tangential component
Q114.
In a multiple V-belt drive, if one of the belt is broken, then we should replace

a.

the broken belt only

b.

all the belts

c.

the broken belt and the belts on either side of it

d.

none of the above

Discuss
Answer: (b).all the belts
Q115.
Most of the engines, generally, do not require balancing of secondary forces and couples.

a.

Right

b.

Wrong

c.

Can't say

d.

None of these

Discuss
Answer: (a).Right
Q116.
The secondary unbalanced force is maximum __________ in one revolution of the crank.

a.

two times

b.

four times

c.

eight times

d.

sixteen times

Discuss
Answer: (b).four times
Q117.
A spring controlled governor is found unstable. It can be made stable by

a.

increasing the spring stiffness

b.

decreasing the spring stiffness

c.

increasing the ball mass

d.

decreasing the ball mass

Discuss
Answer: (b).decreasing the spring stiffness
Q118.
In order to have a good grip on the pulley, the V-belt should touch the bottom of the groove in the pulley.

a.

True

b.

False

c.

Can't say

d.

None of these

Discuss
Answer: (b).False
Q119.
In order to double the period of a simple pendulum, the length of the string should be

a.

halved

b.

doubled

c.

quadrupled

d.

none of these

Discuss
Answer: (c).quadrupled
Q120.
When a slider moves on a fixed link having curved surface, their instantaneous centre lies

a.

on their point of contact

b.

at the centre of curvature

c.

at the centre of circle

d.

at the pin joint

Discuss
Answer: (b).at the centre of curvature
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