Machine Design (2171909) MCQs

MCQs of Rolling Contact Bearings

Showing 61 to 64 out of 64 Questions
4 5 6 7
61.

Ball bearings are, usually, made from

(a)

low carbon steel
(b)

high carbon steel
(c)

medium carbon steel
(d)

chrome steel
Answer:

Option (d)

62.

The purpose of lubrication in an antifriction bearing is

(a)

to reduce the friction between balls and races
(b)

dissipation of frictional heat prevention of corrosion
(c)

protection of the bearing from dirt and other foreign particles
(d)

all of the mentioned
Answer:

Option (d)

63.

_________is suitable as a lubricant for low and moderate loads applications of rolling contact bearing.

(a)

Grease
(b)

Lubricating oil
(c)

Graphite
(d)

Air
Answer:

Option (a)

64.

_________is suitable as a lubricant for heavy-duty applications of rolling contact bearing.

(a)

Grease
(b)

Lubricating oil
(c)

Graphite
(d)

Air
Answer:

Option (b)

Showing 61 to 64 out of 64 Questions
4 5 6 7