A. Cast
B. Stainless
C. Free carbon
D. Carbon chrome
Related Mcqs:
- Ball bearings are normally made of _____________ steel?
A. High speed
B. High carbon
C. Chrome
D. Silicon - Ball bearings are generally made of___________________?
A. Plain carbon steel
B. Chrome carbon steel
C. Stainless steel
D. Malleable cast iron - Balls in a ball mill are usually made of__________________?
A. Steel
B. Cast iron
C. Stainless steel
D. Bronze - The heat treatment process to which castings and the steel balls produced by cold heading are subjected is____________________?
A. Tempering
B. Normalising
C. Annealing
D. None of these - Mild steel is a/an ______________ steel?
A. Low carbon
B. Medium carbon
C. High carbon
D. High alloy - Addition of ______________ to the steel helps in increasing the residual magnetism in steel used for making magnets?
A. Chromium
B. Nickel
C. Tungsten
D. Cobalt - Bush bearings are made of______________________?
A. Mild steel
B. Phosphorous bronze
C. White metal alloys
D. None of these - The material of construction of bearings is__________________?
A. Cast iron
B. Babbitt metal
C. Pig iron
D. Steel - Babbitt metal used for bearings is a ____________base alloy?
A. Tin
B. Lead
C. Aluminium
D. Copper - Babbitt metal used for making bearings should have_____________________?
A. High co-efficient of friction between journal and bearing
B. Ability to retain lubricant on its surface
C. Low co-efficient of friction between journal and bearing
D. Both B. & C.
