Power Engineering - 4B2 Practice
Questions And Answers
Grease:
a. Is a semi-liquid
b. Is an excellent high-speed, low load lubricant
c. Attracts dirt and water to bearings, leading to premature failure
d. Can be used under conditions where oil may leak away and leave the bearing
dry
The lubricant for an anti-friction bearing:
a. Will separate the moving parts completely
b. Must be cooled
c. Could be a semi-solid lubricant
d. Should have a high viscosity
The point at which oil will give off enough vapour to ignite and burn continuously
is known as the _____ point.
a. Flash
b. Ignition
c. Fire
d. Vaporization
With antifriction bearings using grease, the bearings:
a. Must be cleaned twice as often as oil-lubricated bearings
b. Can be cleaned by adding solvent to the grease cartridge
c. Are cleaned less often than oil-lubricated bearings
d. Never require cleaning
Air compressor oil should:
a. Have a very low viscosity
b. Have low carbon residue
Questions And Answers
Grease:
a. Is a semi-liquid
b. Is an excellent high-speed, low load lubricant
c. Attracts dirt and water to bearings, leading to premature failure
d. Can be used under conditions where oil may leak away and leave the bearing
dry
The lubricant for an anti-friction bearing:
a. Will separate the moving parts completely
b. Must be cooled
c. Could be a semi-solid lubricant
d. Should have a high viscosity
The point at which oil will give off enough vapour to ignite and burn continuously
is known as the _____ point.
a. Flash
b. Ignition
c. Fire
d. Vaporization
With antifriction bearings using grease, the bearings:
a. Must be cleaned twice as often as oil-lubricated bearings
b. Can be cleaned by adding solvent to the grease cartridge
c. Are cleaned less often than oil-lubricated bearings
d. Never require cleaning
Air compressor oil should:
a. Have a very low viscosity
b. Have low carbon residue
