4B Power Engineering: Unit 1 -
Lubrication and Bearings Exam
Questions & Answers (Grade A+)
R4B01-01-02-08 All semi-solid lubricants:
Select one:
a. Have a low viscosity
b. Are capable of sealing out dirt and water from bearings
c. Contain graphite
d. Resist moisture -
correct answer ✅B
R4B01-01-03-18 Which type of oil produces higher fluid friction?
Select one:
a. High viscosity oil
b. Low viscosity oil
c. Synthetic oils
d. Fixed oils -
correct answer ✅A
R4B01-02-04-17 When replacing or removing an anti-friction ball
bearing, the applied force should:
Select one:
,4B Power Engineering: Unit 1 -
Lubrication and Bearings Exam
Questions & Answers (Grade A+)
a. Not be transmitted through the bearing balls
b. Always be against the inner race
c. Always be against the outer race
d. Be made only after heating the bearing -
correct answer ✅A
R4B01-01-03-17 If an oil must flow at a very low temperature, it
must have the following additive:
Select one:
a. Viscosity index improver
b. Pour point depressant
c. Dispersant
d. Floc point improver -
correct answer ✅B
R4B01-01-03-14 The oil for a refrigeration compressor must:
Select one:
a. Have a low pour point
b. Have a high flash point
,4B Power Engineering: Unit 1 -
Lubrication and Bearings Exam
Questions & Answers (Grade A+)
c. Have a high fire point
d. Be a multi-grade type -
correct answer ✅A
R4B01-02-03-12 A thrust bearing which does not utilize the oil
wedge principle of lubrication is the:
Select one:
a. Michell type
b. Collar type
c. Radial type
d. Kingsbury type -
correct answer ✅B
R4B01-01-02-11 The _____ number of oil indicates the acidity of
oil.
Select one:
a. Acidity
b. Alkalinity
c. Neutralization
, 4B Power Engineering: Unit 1 -
Lubrication and Bearings Exam
Questions & Answers (Grade A+)
d. Viscosity index -
correct answer ✅C
R4B01-01-03-22 Air compressor oil should:
Select one:
a. Have a very low viscosity
b. Have low carbon residue
c. Have a low flash point
d. Not contain anti-oxidants -
correct answer ✅B
R4B01-02-02-04 A journal bearing:
Select one:
a. Controls thrust movement
b. Does not require lubrication
c. require cooling water
d. Supports a shaft -
correct answer ✅D
Lubrication and Bearings Exam
Questions & Answers (Grade A+)
R4B01-01-02-08 All semi-solid lubricants:
Select one:
a. Have a low viscosity
b. Are capable of sealing out dirt and water from bearings
c. Contain graphite
d. Resist moisture -
correct answer ✅B
R4B01-01-03-18 Which type of oil produces higher fluid friction?
Select one:
a. High viscosity oil
b. Low viscosity oil
c. Synthetic oils
d. Fixed oils -
correct answer ✅A
R4B01-02-04-17 When replacing or removing an anti-friction ball
bearing, the applied force should:
Select one:
,4B Power Engineering: Unit 1 -
Lubrication and Bearings Exam
Questions & Answers (Grade A+)
a. Not be transmitted through the bearing balls
b. Always be against the inner race
c. Always be against the outer race
d. Be made only after heating the bearing -
correct answer ✅A
R4B01-01-03-17 If an oil must flow at a very low temperature, it
must have the following additive:
Select one:
a. Viscosity index improver
b. Pour point depressant
c. Dispersant
d. Floc point improver -
correct answer ✅B
R4B01-01-03-14 The oil for a refrigeration compressor must:
Select one:
a. Have a low pour point
b. Have a high flash point
,4B Power Engineering: Unit 1 -
Lubrication and Bearings Exam
Questions & Answers (Grade A+)
c. Have a high fire point
d. Be a multi-grade type -
correct answer ✅A
R4B01-02-03-12 A thrust bearing which does not utilize the oil
wedge principle of lubrication is the:
Select one:
a. Michell type
b. Collar type
c. Radial type
d. Kingsbury type -
correct answer ✅B
R4B01-01-02-11 The _____ number of oil indicates the acidity of
oil.
Select one:
a. Acidity
b. Alkalinity
c. Neutralization
, 4B Power Engineering: Unit 1 -
Lubrication and Bearings Exam
Questions & Answers (Grade A+)
d. Viscosity index -
correct answer ✅C
R4B01-01-03-22 Air compressor oil should:
Select one:
a. Have a very low viscosity
b. Have low carbon residue
c. Have a low flash point
d. Not contain anti-oxidants -
correct answer ✅B
R4B01-02-02-04 A journal bearing:
Select one:
a. Controls thrust movement
b. Does not require lubrication
c. require cooling water
d. Supports a shaft -
correct answer ✅D
