Power Engineering - 4B2 Practice Questions With Complete
Solutions
A centrifugal pump consists of:
a. An impeller surrounded by a casing
b. Gears rotating in a housing
c. Sliding vanes
d. A pulsating disc Correct Answers a. An impeller surrounded
by a casing
A circulating pump, known as a cooling water pump, is usually:
a. Connected with some type of heat exchanger system
b. A once-through device
c. A reciprocating pump
d. A small capacity pump Correct Answers a. Connected with
some type of heat exchanger system
A diffuser pump:
a. Does not have a volute
b. Does not have to be primed
c. Has high suction lift
d. Is more effective at changing velocity to pressure than a
volute pump Correct Answers d. Is more effective at changing
velocity to pressure than a volute pump
A double-acting pump:
a. Has two pistons on the pump end
, b. Has two pistons on the driver end
c. Has two slide valves
d. Is a positive displacement pump Correct Answers d. Is a
positive displacement pump
A pump is capable of suction lift due to:
a. Its ability to convert kinetic energy into potential energy
b. The speed at which it operates
c. Its input power
d. Atmospheric pressure Correct Answers d. Atmospheric
pressure
A reciprocating air compressor works on the principle of:
a. Pressure reduction
b. Centrifugal force
c. Volumetric expansion
d. Volume reduction Correct Answers d. Volume reduction
A rotary pump:
a. Is silent in operation
b. Has severe discharge pulsations
c. Should be equipped with a relief valve
d. Is a dynamic pump Correct Answers c. Should be equipped
with a relief valve
A speed-increasing gear is commonly used on:
a. Rotary lobe compressors
Solutions
A centrifugal pump consists of:
a. An impeller surrounded by a casing
b. Gears rotating in a housing
c. Sliding vanes
d. A pulsating disc Correct Answers a. An impeller surrounded
by a casing
A circulating pump, known as a cooling water pump, is usually:
a. Connected with some type of heat exchanger system
b. A once-through device
c. A reciprocating pump
d. A small capacity pump Correct Answers a. Connected with
some type of heat exchanger system
A diffuser pump:
a. Does not have a volute
b. Does not have to be primed
c. Has high suction lift
d. Is more effective at changing velocity to pressure than a
volute pump Correct Answers d. Is more effective at changing
velocity to pressure than a volute pump
A double-acting pump:
a. Has two pistons on the pump end
, b. Has two pistons on the driver end
c. Has two slide valves
d. Is a positive displacement pump Correct Answers d. Is a
positive displacement pump
A pump is capable of suction lift due to:
a. Its ability to convert kinetic energy into potential energy
b. The speed at which it operates
c. Its input power
d. Atmospheric pressure Correct Answers d. Atmospheric
pressure
A reciprocating air compressor works on the principle of:
a. Pressure reduction
b. Centrifugal force
c. Volumetric expansion
d. Volume reduction Correct Answers d. Volume reduction
A rotary pump:
a. Is silent in operation
b. Has severe discharge pulsations
c. Should be equipped with a relief valve
d. Is a dynamic pump Correct Answers c. Should be equipped
with a relief valve
A speed-increasing gear is commonly used on:
a. Rotary lobe compressors
