sliding contact bearings

Question 1

In a full journal bearing, the angle of contact of the bearing with the journal is

Answer 1

360°

Question 2

A sliding bearing which can support steady loads without any relative motion between the journal and the bearing is called

Answer 2

hydrostatic lubricated bearing

Question 3

In a boundary lubricated bearing, there is a _______ of lubricant between the journal and the bearing.

Answer 3

thin film

Question 4

When a shaft rotates in anticlockwise direction at slow speed in a bearing, then it will

Answer 4

move towards left of the bearing making metal to metal contact

Question 5

The property of a bearing material which has the ability to accommodate small particles of dust, grit etc., without scoring the material of the journal, is called

Answer 5

embeddability

Question 6

Teflon is used for bearings because of

Answer 6

low coefficient of friction

Question 7

When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be ______ the bearing modulus.

Answer 7

15 times

Question 8

When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a

Answer 8

square bearing

Question 9

If Z = Absolute viscosity of the lubricant in kg/m-s, N = Speed of the journal in r.p.m., and p = Bearing pressure in N/mm2, then the bearing characteristic number is

Answer 9

ZN/p

Question 10

In thrust bearings, the load acts

Answer 10

along the axis of rotation