TSSA 4TH CLASS B TEST QUESTIONS
AND ANSWERS
Unit 1 Lubrication and bearings - Correct Answers -
Large journal or sleeve bearings have grooves:
Select one:
a. In the non-pressure area
b. For distributing lubricant evenly just after the pressure area
c. Cut into the bearing housing
d. In the high pressure area of the bearing babbit - Correct Answers -In the non-
pressure area
A normal anti-friction bearing temperature operating range is:
Select one:
a. 80°C to 120°C
b. 20°C to 50°C
c. 65°C to 70°C
d. 150°C to 160°C - Correct Answers -65°C to 70°C
The inlet of a hot oil pump is located:
Select one:
a. Below the expansion tank
b. Inside the surge tank
c. As close as possible to the heater outlet
d. Above the surge tank - Correct Answers -a. Below the expansion tank
The hydrocarbons in natural gas may include:
Select one:
a. Hydrogen sulfide
b. Nitrogen
c. Ethane
d. Carbon dioxide - Correct Answers -c. Ethane
The convection tubes of a horizontal direct-fired hot oil heater are found
Select one:
a. embedded in the refractory lining
b. in the flue gas flow, downstream of the furnace
c. in the firebox
,d. in thewindbox - Correct Answers -b. in the flue gas flow, downstream of the furnace
The purpose of €œcooking€ in a pulp mill is to:
Select one:
a. Heat the wood chips
b. Remove the fiber from the wood chips
c. Remove the lignin from the wood chips
d. Soften the wood chips - Correct Answers -c. Remove the lignin from the wood chips
A collar thrust bearing:
Select one:
a. Has boundary lubrication
b. Is used with steam turbines only
c. Is an anti-friction type bearing
d. Can support more load than a Michell thrust bearing - Correct Answers -a. Has
boundary lubrication
A material that is commonly used as a solid lubricant is:
Select one:
a. Tallow
b. Lime
c. Molybdenum disulfide
d. Sodium carbonate - Correct Answers -c. Molybdenum disulfide
Lubricants used for high-output steam turbines should:
Select one:
a. Mix well with water
b. Have a low pour point
c. Be fire resistant
d. Have a very high viscosity - Correct Answers -c. Be fire resistant
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 Answers -b. Are capable of sealing out dirt and water from
bearings
Which of the following has the greatest effect on the viscosity of lubrication oil?
Select one:
a. Pressure
b. Load
c. Temperature
d. Speed - Correct Answers -c. Temperature
,Applying installation forces through the balls of a bearing can cause:
Select one:
a. Brinelling
b. Cracking or breaking of the balls
c. too large an air gap
d. Bearing misalignment - Correct Answers -a. Brinelling
If an oil must flow at a very low temperature[comma] it must have the following additive:
Select one:
a. Viscosity index improver
b. Pour point depressant
c. Dispersant
d. Floc point improver - Correct Answers -b. Pour point depressant
The oil for a refrigeration compressor must:
Select one:
a. Be a multi-grade type
b. Have a high fire point
c. Have a high flash point
d. Have a low pour point - Correct Answers -d. Have a low pour point
The characteristics of a grease are determined by:
Select one:
a. Its thickening agent or €œsoap€
b. Its consistency
c. The type of oil used in the grease
d. Its protective coating - Correct Answers -a. Its thickening agent or €œsoap€
If ambient air temperatures are very low[comma] the preferred lubricant is a:
Select one:
a. Solid
b. Semi-solid
c. Fixed oil
d. Liquid - Correct Answers -a. Solid
A common cause of antifriction bearing failure is:
Select one:
a. Shaft misalignment
b. Drive motor overload
c. Extreme cold temperature cracking
d. High RPM service - Correct Answers -a. Shaft misalignment
The cheapest and most commonly used grease is:
Select one:
a. Sulphate base
, b. Lime base
c. Chlorine base
d. Potassium base - Correct Answers -b. Lime base
A form of lubrication that requires continual motion of a shaft or surface is:
Select one:
a. Fluid film lubrication
b. Forced lubrication
c. Continuous lubrication
d. Boundary lubrication - Correct Answers -a. Fluid film lubrication
The ability of an oil to lift and support heavy loads depends upon:
Select one:
a. Pour point
b. acceleration
c. Hydraulic pressure
d. kinetic energy - Correct Answers -c. Hydraulic pressure
A thrust bearing which does not utilize the oil wedge principle of lubrication is the:
Select one:
a. Kingsbury type
b. Radial type
c. Collar type
d. Michell type - Correct Answers -c. Collar type
A type of anti-friction bearing is the _____ .
Select one:
a. Journal bearing
b. Sleeve bearing
c. Ball bearing
d. Kingsbury - Correct Answers -c. Ball bearing
When replacing or removing an anti-friction ball bearing, the applied force should:
Select one:
a. Be made only after heating the bearing
b. Always be against the outer race
c. Always be against the inner race
d. Not be transmitted through the bearing balls - Correct Answers -d. Not be transmitted
through the bearing balls
When inspecting a dismantled bearing, the first indication of a failing bearing is:
Select one:
a. Rusting or corrosion
b. Discoloration
c. Roughness
d. Cracked balls - Correct Answers -c. Roughness
AND ANSWERS
Unit 1 Lubrication and bearings - Correct Answers -
Large journal or sleeve bearings have grooves:
Select one:
a. In the non-pressure area
b. For distributing lubricant evenly just after the pressure area
c. Cut into the bearing housing
d. In the high pressure area of the bearing babbit - Correct Answers -In the non-
pressure area
A normal anti-friction bearing temperature operating range is:
Select one:
a. 80°C to 120°C
b. 20°C to 50°C
c. 65°C to 70°C
d. 150°C to 160°C - Correct Answers -65°C to 70°C
The inlet of a hot oil pump is located:
Select one:
a. Below the expansion tank
b. Inside the surge tank
c. As close as possible to the heater outlet
d. Above the surge tank - Correct Answers -a. Below the expansion tank
The hydrocarbons in natural gas may include:
Select one:
a. Hydrogen sulfide
b. Nitrogen
c. Ethane
d. Carbon dioxide - Correct Answers -c. Ethane
The convection tubes of a horizontal direct-fired hot oil heater are found
Select one:
a. embedded in the refractory lining
b. in the flue gas flow, downstream of the furnace
c. in the firebox
,d. in thewindbox - Correct Answers -b. in the flue gas flow, downstream of the furnace
The purpose of €œcooking€ in a pulp mill is to:
Select one:
a. Heat the wood chips
b. Remove the fiber from the wood chips
c. Remove the lignin from the wood chips
d. Soften the wood chips - Correct Answers -c. Remove the lignin from the wood chips
A collar thrust bearing:
Select one:
a. Has boundary lubrication
b. Is used with steam turbines only
c. Is an anti-friction type bearing
d. Can support more load than a Michell thrust bearing - Correct Answers -a. Has
boundary lubrication
A material that is commonly used as a solid lubricant is:
Select one:
a. Tallow
b. Lime
c. Molybdenum disulfide
d. Sodium carbonate - Correct Answers -c. Molybdenum disulfide
Lubricants used for high-output steam turbines should:
Select one:
a. Mix well with water
b. Have a low pour point
c. Be fire resistant
d. Have a very high viscosity - Correct Answers -c. Be fire resistant
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 Answers -b. Are capable of sealing out dirt and water from
bearings
Which of the following has the greatest effect on the viscosity of lubrication oil?
Select one:
a. Pressure
b. Load
c. Temperature
d. Speed - Correct Answers -c. Temperature
,Applying installation forces through the balls of a bearing can cause:
Select one:
a. Brinelling
b. Cracking or breaking of the balls
c. too large an air gap
d. Bearing misalignment - Correct Answers -a. Brinelling
If an oil must flow at a very low temperature[comma] it must have the following additive:
Select one:
a. Viscosity index improver
b. Pour point depressant
c. Dispersant
d. Floc point improver - Correct Answers -b. Pour point depressant
The oil for a refrigeration compressor must:
Select one:
a. Be a multi-grade type
b. Have a high fire point
c. Have a high flash point
d. Have a low pour point - Correct Answers -d. Have a low pour point
The characteristics of a grease are determined by:
Select one:
a. Its thickening agent or €œsoap€
b. Its consistency
c. The type of oil used in the grease
d. Its protective coating - Correct Answers -a. Its thickening agent or €œsoap€
If ambient air temperatures are very low[comma] the preferred lubricant is a:
Select one:
a. Solid
b. Semi-solid
c. Fixed oil
d. Liquid - Correct Answers -a. Solid
A common cause of antifriction bearing failure is:
Select one:
a. Shaft misalignment
b. Drive motor overload
c. Extreme cold temperature cracking
d. High RPM service - Correct Answers -a. Shaft misalignment
The cheapest and most commonly used grease is:
Select one:
a. Sulphate base
, b. Lime base
c. Chlorine base
d. Potassium base - Correct Answers -b. Lime base
A form of lubrication that requires continual motion of a shaft or surface is:
Select one:
a. Fluid film lubrication
b. Forced lubrication
c. Continuous lubrication
d. Boundary lubrication - Correct Answers -a. Fluid film lubrication
The ability of an oil to lift and support heavy loads depends upon:
Select one:
a. Pour point
b. acceleration
c. Hydraulic pressure
d. kinetic energy - Correct Answers -c. Hydraulic pressure
A thrust bearing which does not utilize the oil wedge principle of lubrication is the:
Select one:
a. Kingsbury type
b. Radial type
c. Collar type
d. Michell type - Correct Answers -c. Collar type
A type of anti-friction bearing is the _____ .
Select one:
a. Journal bearing
b. Sleeve bearing
c. Ball bearing
d. Kingsbury - Correct Answers -c. Ball bearing
When replacing or removing an anti-friction ball bearing, the applied force should:
Select one:
a. Be made only after heating the bearing
b. Always be against the outer race
c. Always be against the inner race
d. Not be transmitted through the bearing balls - Correct Answers -d. Not be transmitted
through the bearing balls
When inspecting a dismantled bearing, the first indication of a failing bearing is:
Select one:
a. Rusting or corrosion
b. Discoloration
c. Roughness
d. Cracked balls - Correct Answers -c. Roughness
