Machine Design (2171909) MCQs

MCQs of Rolling Contact Bearings

Showing 41 to 50 out of 64 Questions
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41.

Which one of the following parts of a ball bearing is mounted on the rotating shafts and tends to rotate the shaft?

(a)

Inner race
(b)

Outer race
(c)

Rolling element
(d)

Cage
Answer:

Option (a)

42.

Which one of the following parts of a ball bearing is mounted to the housing and is stationary?

(a)

Inner race
(b)

Outer race
(c)

Rolling element
(d)

Cage
Answer:

Option (b)

43.

Which one of the following parts of a ball bearing acts as a barrier between the balls preventing them from bumping into each other?

(a)

Inner race
(b)

Outer race
(c)

Rolling element
(d)

Cage
Answer:

Option (d)

44.

An antifriction bearing consists of

(a)

rolling elements
(b)

races
(c)

cages
(d)

all of the listed
Answer:

Option (d)

45.

The static load is defined as the load acting on the bearing when the shaft is _____.

(a)

stationary
(b)

rotating at rpm<5
(c)

rotating at rpm<10
(d)

rotating at rpm<15
Answer:

Option (a)

46.

A total permanent deformation of 0.0001 of the ball diameter is taken for considering the static load capacity of the shaft.

(a)

True
(b)

False
Answer:

Option (a)

47.

Stribeck equation gives the dynamic load capacity of the bearing.

(a)

True
(b)

False
Answer:

Option (b)

48.

Which of the following is an expression for the Stribeck equation? (Number of balls=z)

(a)

C=kd²z/5
(b)

C=kd²z/10
(c)

C=kd²z/15
(d)

C=kd²z/20
Answer:

Option (a)

49.

The life of an individual ball bearing is the time period for which it works without any signs of failures.

(a)

True
(b)

False
Answer:

Option (b)

50.

The rated life of a bearing varies

(a)

directly as load
(b)

inversely as the square of the load
(c)

inversely as the cube of the load
(d)

inversely as fourth power of load
Answer:

Option (c)

Showing 41 to 50 out of 64 Questions
2 3 4 5 6 7