Kinematics and Theory of Machines (3131906) MCQs

MCQs of Belt, Ropes and Chains

Showing 1 to 10 out of 47 Questions
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1.

The velocity ratio of two pulleys connected by an open belt or crossed belt is ____.

(a)

directly proportional to their diameters
(b)

inversely proportional to their diameters
(c)

directly proportional to the square of their diameters
(d)

inversely proportional to the square of their diameters
Answer:

Option (b)

2.

Due to slip of the belt, the velocity ratio of the belt drive ______.

(a)

decreases
(b)

increases
(c)

does not change
(d)

can't say
Answer:

Option (a)

3.

When two pulleys of different diameters are connected by means of an open belt drive, then the angle of contact taken into consideration should be of the _____.

(a)

larger pulley
(b)

smaller pulley
(c)

average of two pulleys
(d)

either larger or smaller
Answer:

Option (b)

4.

The centrifugal tension in belts ______.

(a)

increases power transmitted
(b)

decreases power transmitted
(c)

have no effect on the power transmitted
(d)

increases power transmitted upto a certain speed and then decreases
Answer:

Option (c)

5.

When the belt is stationary, it is subjected to some tension, known as initial tension. The value of this tension is equal to the ____.

(a)

tension in the tight side of the belt
(b)

tension in the slack side of the belt
(c)

sum of the tensions in the tight side and slack side of the belt
(d)

average tension of the tight side and slack side of the belt
Answer:

Option (d)

6.

Which of the following is not a flexible type of connector?

(a)

Belt
(b)

Rope
(c)

Chain
(d)

Gear
Answer:

Option (d)

7.

A pulley and belt in a belt drive constitute a ______.

(a)

turning pair
(b)

sliding pair
(c)

cylindrical pair
(d)

rolling pair
Answer:

Option (d)

8.

The included angle of a pulley for a V-belt is _____ (in degrees).

(a)

50-60
(b)

30-40
(c)

20-30
(d)

40-50
Answer:

Option (b)

9.

The crowning of pulleys is done to ______.

(a)

increase the tightness of the belt on the pulley
(b)

prevent belt running off the pulley
(c)

increase the torque transmitted
(d)

improve the shape and strength of the pulley
Answer:

Option (b)

10.

The law of belting states that the centerline of the belt when it _________ a pulley must lie in the mid-plane of that pulley.

(a)

leaves
(b)

approaches
(c)

approaches as well as leaves
Answer:

Option (b)

Showing 1 to 10 out of 47 Questions
1 2 3 4 5