Power Engineering - 4B1 Practice Questions With Complete
Solutions
The instrument that measures the viscosity of an oil at a certain
temperature as it flows through a small diameter tube, is called:
a. An orifice plate
b. A Saybolt viscometer
c. An oil meter
d. A vena contracta
b. A Saybolt viscometer
Which type of oil produces higher fluid friction?
a. High viscosity oil
b. Low viscosity oil
c. Synthetic oils
d. Fixed oils
a. High viscosity oil
The characteristics of a grease are determined by:
a. Its thickening agent or soap
b. Its consistency
c. The type of oil used in the grease
d. Its protective coating
a. Its thickening agent or soap
,A type of anti-friction bearing is the _____ .
a. Kingsbury
b. Ball bearing
c. Sleeve bearing
d. Journal bearing
b. Ball bearing
If an oil must flow at a very low temperature, it must have the
following additive:
a. Viscosity index improver
b. Pour point depressant
c. Dispersant
d. Floc point improver
b. Pour point depressant
The majority of lubricants are:
a. Animal fats
b. Synthetic oils
c. Mineral oils
d. Greases
c. Mineral oils
The cheapest and most commonly used grease is:
a. Potassium base
b. Chlorine base
,c. Lime base
d. Sulphate base
c. Lime base
The oil for a refrigeration compressor must:
a. Have a low pour point
b. Have a high flash point
c. Have a high fire point
d. Be a multi-grade type
a. Have a low pour point
A material that is commonly used as a solid lubricant is:
a. Tallow
b. Lime
c. Molybdenum disulfide
d. Sodium carbonate
c. Molybdenum disulfide
The proper way to store a bearing after cleaning is to dip it in
__________________ and wrap it in grease-proof paper.
a. A desiccant such as rice
b. Wax
c. Solvent
d. A rust preventative
d. A rust preventative
, An anti-friction bearing:
a. Is constructed with white metal alloy
b. Wears to a smooth, low-friction surface
c. Has rolling friction
d. Is a sleeve bearing
c. Has rolling friction
The ability of an oil to lift and support heavy loads depends
upon:
a. Kinetic energy
b. Hydraulic pressure
c. Acceleration
d. Pour point
b. Hydraulic pressure
Lubricants used for high-output steam turbines should:
a. Have a very high viscosity
b. Be fire resistant
c. Have a low pour point
d. Mix well with water
b. Be fire resistant
A journal bearing:
a. Controls thrust movement
b. Does not require lubrication
Solutions
The instrument that measures the viscosity of an oil at a certain
temperature as it flows through a small diameter tube, is called:
a. An orifice plate
b. A Saybolt viscometer
c. An oil meter
d. A vena contracta
b. A Saybolt viscometer
Which type of oil produces higher fluid friction?
a. High viscosity oil
b. Low viscosity oil
c. Synthetic oils
d. Fixed oils
a. High viscosity oil
The characteristics of a grease are determined by:
a. Its thickening agent or soap
b. Its consistency
c. The type of oil used in the grease
d. Its protective coating
a. Its thickening agent or soap
,A type of anti-friction bearing is the _____ .
a. Kingsbury
b. Ball bearing
c. Sleeve bearing
d. Journal bearing
b. Ball bearing
If an oil must flow at a very low temperature, it must have the
following additive:
a. Viscosity index improver
b. Pour point depressant
c. Dispersant
d. Floc point improver
b. Pour point depressant
The majority of lubricants are:
a. Animal fats
b. Synthetic oils
c. Mineral oils
d. Greases
c. Mineral oils
The cheapest and most commonly used grease is:
a. Potassium base
b. Chlorine base
,c. Lime base
d. Sulphate base
c. Lime base
The oil for a refrigeration compressor must:
a. Have a low pour point
b. Have a high flash point
c. Have a high fire point
d. Be a multi-grade type
a. Have a low pour point
A material that is commonly used as a solid lubricant is:
a. Tallow
b. Lime
c. Molybdenum disulfide
d. Sodium carbonate
c. Molybdenum disulfide
The proper way to store a bearing after cleaning is to dip it in
__________________ and wrap it in grease-proof paper.
a. A desiccant such as rice
b. Wax
c. Solvent
d. A rust preventative
d. A rust preventative
, An anti-friction bearing:
a. Is constructed with white metal alloy
b. Wears to a smooth, low-friction surface
c. Has rolling friction
d. Is a sleeve bearing
c. Has rolling friction
The ability of an oil to lift and support heavy loads depends
upon:
a. Kinetic energy
b. Hydraulic pressure
c. Acceleration
d. Pour point
b. Hydraulic pressure
Lubricants used for high-output steam turbines should:
a. Have a very high viscosity
b. Be fire resistant
c. Have a low pour point
d. Mix well with water
b. Be fire resistant
A journal bearing:
a. Controls thrust movement
b. Does not require lubrication
