Power Engineering - 4B (Part 1) Exam
Questions & Answers (Grade A+)
If lubricating oil has a high viscosity index number, this means the
viscosity will:
a. Change a great deal with temperature change
b. Not change at all with temperature change
c. Vaporize with a temperature increase
d. Change little with temperature change
e. Increase in pressure as the temperature decreases. -
correct answer ✅d. Change little with temperature change
The viscosity of oil:
1. Is the temperature at which oil will burn
2. Determines the ability of the oil to support a load
3. Will prevent corrosion of bearings
4. Indicates the liquid's ability to flow
a. 2, 3, 4
b. 1, 3
c. 3, 4
d. 1, 2, 4
,Power Engineering - 4B (Part 1) Exam
Questions & Answers (Grade A+)
e. 2, 4. -
correct answer ✅e. 2, 4.
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. -
correct answer ✅b. 1, 2, 3
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
,Power Engineering - 4B (Part 1) Exam
Questions & Answers (Grade A+)
d. High viscosity index
e. Low pour point. -
correct answer ✅a. Low viscosity index
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. -
correct answer ✅a. Should not affect all other characteristics
greatly
The two most important functions of lubrication are for the
reduction of:
a. Friction and wear
b. Friction and heat
c. Heat and corrosion
d. Flash point and fire point
e. Pour point and corrosion. -
correct answer ✅a. Friction and wear
, Power Engineering - 4B (Part 1) Exam
Questions & Answers (Grade A+)
The viscosity of oil:
a. Is the temperature at which oil will burn
b. Will prevent corrosion of bearings
c. Determines the ability of the oil to support a load
d. Refers to carbon content of the oil
e. Is a measure of its ability to freeze. -
correct answer ✅c. Determines the ability of the oil to support a
load
The point at which oil will give off enough vapor to ignite and burn
continuously, is known as the _____ point.
a. Flash
b. Ignition
c. Fire
d. Vaporization
e. Burning. -
correct answer ✅c. Fire
The property of oil that indicates its ability to support a load is:
Questions & Answers (Grade A+)
If lubricating oil has a high viscosity index number, this means the
viscosity will:
a. Change a great deal with temperature change
b. Not change at all with temperature change
c. Vaporize with a temperature increase
d. Change little with temperature change
e. Increase in pressure as the temperature decreases. -
correct answer ✅d. Change little with temperature change
The viscosity of oil:
1. Is the temperature at which oil will burn
2. Determines the ability of the oil to support a load
3. Will prevent corrosion of bearings
4. Indicates the liquid's ability to flow
a. 2, 3, 4
b. 1, 3
c. 3, 4
d. 1, 2, 4
,Power Engineering - 4B (Part 1) Exam
Questions & Answers (Grade A+)
e. 2, 4. -
correct answer ✅e. 2, 4.
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. -
correct answer ✅b. 1, 2, 3
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
,Power Engineering - 4B (Part 1) Exam
Questions & Answers (Grade A+)
d. High viscosity index
e. Low pour point. -
correct answer ✅a. Low viscosity index
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. -
correct answer ✅a. Should not affect all other characteristics
greatly
The two most important functions of lubrication are for the
reduction of:
a. Friction and wear
b. Friction and heat
c. Heat and corrosion
d. Flash point and fire point
e. Pour point and corrosion. -
correct answer ✅a. Friction and wear
, Power Engineering - 4B (Part 1) Exam
Questions & Answers (Grade A+)
The viscosity of oil:
a. Is the temperature at which oil will burn
b. Will prevent corrosion of bearings
c. Determines the ability of the oil to support a load
d. Refers to carbon content of the oil
e. Is a measure of its ability to freeze. -
correct answer ✅c. Determines the ability of the oil to support a
load
The point at which oil will give off enough vapor to ignite and burn
continuously, is known as the _____ point.
a. Flash
b. Ignition
c. Fire
d. Vaporization
e. Burning. -
correct answer ✅c. Fire
The property of oil that indicates its ability to support a load is:
