Which of the following is used for bearing liner?

A Gun metal
B Bronze
C Bell metal
D Babbitt metal

Correct Answer: Babbitt metal

It is a soft, white non-ferrous alloy which is used to provide a bearing surface.
Bearings are used in engines to support moving mechanical parts and protect them from frictional degradation.
Babbitt metal also has properties that help it reduce friction which makes it a good material for use in a plain bearing
Bissoy MCQ
#Mechanical Engineering #Engineering Materials

Related Questions

The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing and R = Radius of bearing surface)
A $$\frac{1}{2}$$μWR
B $$\frac{2}{3}$$μWR
C $$\frac{3}{4}$$μWR
D μWR
When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.
A 10 times
B 5 times
C 15 times
D 20 times
If p = bearing pressure on projected bearing area, Z = absolute viscosity of lubricant and N = speed of journal, then the bearing characteristic number is given by
A $$\frac{{{\text{ZN}}}}{{\text{p}}}$$
B $$\frac{{\text{p}}}{{{\text{ZN}}}}$$
C $$\frac{{\text{Z}}}{{{\text{pN}}}}$$
D $$\frac{{\text{N}}}{{{\text{Zp}}}}$$
Ribs are used for strengthening and stiffening the liner plate for tunnels of diameter greater than
A 2 m
B 3 m
C 4 m
D 5 m
The type of bearing plate used in all joints and on curves to give better bearing area to the rails is
A flat mild steel bearing plate
B mild steel canted bearing plate
C cast iron anti creep bearing plate
D none of the above
Which one of the following planes is called Dream Liner?
A Boeing 787
Noise level inside a jet air liner in normal flight is about __________ decibels.
A 80
B 100
C 125
D 145
A sliding bearing in which although lubricant is present, the working surfaces __________ contact each other at least part of the time, is called boundary lubricated bearing.
A Partially
B Fully
C Either A or B
D None of these
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A Hydrostatic lubricated bearing
B Hydrodynamic lubricated bearing
C Boundary lubricated bearing
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B Embeddability
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