Lubrication and bearings power engineering b1 94 Frequently Asked Questions With Correct Answers|40 Pages
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Course
Lubrication and bearings power engineering
Institution
Lubrication And Bearings Power Engineering
b - ️️A semi-solid lubricant:
1. Has a high viscosity
2. Is to seal out dirt and water from bearings
3. Cannot be used for high temperature
4. Can be filtered
a. 1, 2, 3, 4
b. 1, 2, 3
c. 2, 3, 4
d. 1, 2, 4
e. 3, 4.
e - ️️A form of lubrication that requires continual motion of a sh...
Lubrication and bearings power
engineering b1 94 Frequently
Asked Questions
b - ✔ ✔ A semi-solid lubricant:
1. Has a high viscosity
2. Is to seal out dirt and water from bearings
3. Cannot be used for high temperature
4. Can be filtered
a. 1, 2, 3, 4
b. 1, 2, 3
c. 2, 3, 4
d. 1, 2, 4
e. 3, 4.
e - ✔ ✔ A form of lubrication that requires continual
motion of a shaft or surface is:
a. Boundary lubrication
,b. Alemite fitting lubrication
c. Forced lubrication
d. Zerk fitting lubrication
e. Fluid film lubrication.
c - ✔ ✔ The cheapest and most commonly used grease
is:
a. Potassium base
b. Chlorine base
c. Lime base
d. Sulphate base
e. Water base.
d - ✔ ✔ A material that is commonly used as a solid
lubricant is:
a. Tallow
b. Molybdate sulfide
c. Lime
d. Molybdenum disulfide
e. Sodium carbonate.
,a - ✔ ✔ If ambient air temperatures are low, the
preferred lubricant is a:
a. Solid
b. Semi-solid
c. Viscose oil
d. Vapor
e. Liquid.
b - ✔ ✔ Fluid film lubrication:
a. Is always used with a high viscosity oil
b. Is also called flooded lubrication
c. Is always used with a grease lubricant
d. Is different from flooded lubrication
e. Does not separate the metal surfaces.
c - ✔ ✔ Using pressurized air to blow out a cleaned
bearing:
a. Should only be done when ventilation is maximum
b. Must be done only while the bearing is hot
c. Will cause the bearing to become "pitted"
, d. Can not cause damage to or affect our skin in any way
e. Requires high-pressure air.
a - ✔ ✔ If an oil's viscosity changes much with little
temperature change, it will then have a:
a. Low viscosity index
b. High pour point
c. High carbon residue
d. High viscosity index
e. Low pour point.
a - ✔ ✔ Oil additives:
a. Should not affect all other characteristics greatly
b. Will always affect the pour point greatly
c. Should be used as little as possible
d. Are not a component of most lubrication oil
e. Never lose their effect during use of the oil.
a - ✔ ✔ The two most important functions of
lubrication are for the reduction of:
a. Friction and wear
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