80 4th Class Power Engineering Unit B1: Lubrication and Bearings Review Quiz Questions With Well Researched Answers|24 Pages
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Course
80 4th Class Power Engineering Unit B1
Institution
80 4th Class Power Engineering Unit B1
The best way to clean a bearing is:
Select one:
a. to send it to the manufacturer
b. to acid clean it
c. to first remove it from the machine
d. to vacuum it - ️️c
This number indicates the acidity of an oil:
Select one:
a. pH
b. acidity
c. alkalinity
d. neutralization - ️️d
Th...
80 4th Class Power Engineering Unit B1:
Lubrication and Bearings Review Quiz
Questions
The best way to clean a bearing is:
Select one:
a. to send it to the manufacturer
b. to acid clean it
c. to first remove it from the machine
d. to vacuum it - ✔ ✔ c
This number indicates the acidity of an oil:
Select one:
a. pH
b. acidity
c. alkalinity
d. neutralization - ✔ ✔ d
This type of thrust bearing does not utilize an "oil wedge":
Select one:
a. Mitchell type
b. collar type
c. flotation type
d. Kingsbury type - ✔ ✔ b
,Three causes of oil related bearing failure are, excessive oil
temperature, loss of oil, and:
Select one:
a. improper oil selection
b. poor refining processes
c. relying on an automatic oil feeder
d. no extreme pressure additive in the oil - ✔ ✔ a
To ease installation of a bearing on a shaft, the bearing:
Select one:
a. is greased
b. may be sub-cooled
c. may be pressed onto the shaft
d. may be heated - ✔ ✔ d
Using pressurized air to blow out a cleaned bearing:
Select one:
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 damaged
d. requires high pressure air - ✔ ✔ c
The characteristics of a good grease are largely determined by:
Select one:
a. its thickening agent
b. its consistency
, c. the type of oil used in the grease
d. its protective coating - ✔ ✔ a
The groove that is cut in the top half in the lining of a shell bearing
should not extend closer to the ends than:
Select one:
a.3 mm
b. 10 mm
c. 1.25 cm
d. 1.7 cm - ✔ ✔ c
The intermeshing of gear teeth is a place where
Select one:
a. temperature control is very important
b. friction reduction is very important
c. sealing is very important
d. shock absorption is very important - ✔ ✔ d
A form of lubrication, which requires continual motion of a shaft or
surface, is:
Select one:
a. boundary lubrication
b. forced lubrication
c. controlled lubrication
d. fluid film lubrication - ✔ ✔ d
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