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.

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Theory of machines MCQs | Page 29 of 48

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Q281.
Which of the following property of the instantaneous centre is correct ?

a.

A rigid link rotates instantaneously relative to another link at the instantaneous centre for the configuration of the mechanism considered.

b.

The two rigid links have no linear velocity relative to each other at the instantaneous centre.

c.

The velocity of the instantaneous centre relative to any third rigid link is same whether the instantaneous centre is regarded as a point on the first rigid link or on the second rigid link.

d.

all of the above

Discuss
Answer: (d).all of the above
Q282.
The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness of the shaft, and I = Mass moment of inertia of the disc attached at the end of a shaft)

a.

2ฯ€. โˆš(q/I)

b.

2ฯ€ qI

c.

(1/2ฯ€). โˆš(q/I)

d.

1/2ฯ€

Discuss
Answer: (c).(1/2ฯ€). โˆš(q/I)
Q283.
If the rotating mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius is half the mean radius of the former, then energy stored in the latter at the same speed will be

a.

four times the first one

b.

same as the first one

c.

one fourth of the first one

d.

one and a half times the first one

Discuss
Answer: (c).one fourth of the first one
Q284.
The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion is (where l = Number of links, and j = Number of binary joints)

a.

n = (l - 1) - j

b.

n = 2(l - 1) - 2j

c.

n = 3(l - 1) - 2j

d.

n = 4(l - 1) - 3j

Discuss
Answer: (c).n = 3(l - 1) - 2j
Q285.
In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be

a.

less sensitive

b.

more sensitive

c.

unaffected of sensitivity

d.

isochronous

Discuss
Answer: (a).less sensitive
Q286.
The included angle for the V-belt is usually

a.

10° to 20°

b.

20° to 30°

c.

30° to 40°

d.

60° to 80°

Discuss
Answer: (c).30° to 40°
Q287.
In a steam engine, the link constitutes a

a.

piston, piston rod and crosshead

b.

connecting rod with big and small end brasses, caps and bolts

c.

crank pin, crankshaft and flywheel

d.

all of the above

Discuss
Answer: (d).all of the above
Q288.
The secondary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is

a.

0° and 90°

b.

180° and 360°

c.

both (a) and (b)

d.

none of these

Discuss
Answer: (c).both (a) and (b)
Q289.
In a kinematic chain, a quaternary joint is equivalent to

a.

one binary joint

b.

two binary joints

c.

three binary joints

d.

four binary joints

Discuss
Answer: (c).three binary joints
Q290.
For dynamic balancing of a shaft

a.

the net dynamic force acting on the shaft is equal to zero

b.

the net couple due to the dynamic forces acting on the shaft is equal to zero

c.

both (a) and (b)

d.

none of the above

Discuss
Answer: (c).both (a) and (b)
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