Turbine pumps are best suited for

Turbine pumps are best suited for

a) low capacity low pressure service
b) low capacity high pressure service
c) high capacity high pressure service
d) high capacity low pressure service
e) heavy viscous fluids





Answer: B

Pumps handling cryogenic materials operate

Pumps handling cryogenic materials operate

a) as staged units
b) at extremely low temperatures
c) nearly always as dynamic units
d) as tandem units
e) as high speed units






Answer: B

A positive displacement stand by-pump will have

A positive displacement stand by-pump will have

a) the vent and drain valves open
b) the suction valve closed and the discharge valve open
c) the suction valve open and the discharge closed
d) the suction valve open and the discharge valve open
e) the suction valve and the discharge valves closed




Answer: D

If a pump is cavitating what can you do to prevent or reduce the cavitation?

If a pump is cavitating what can you do to prevent or reduce the cavitation?

a) close the casing vent valve
b) open the vent valve and close the suction valve
c) partially close the suction valve
d) close the discharge valve
e) raise the suction pressure







Answer: E

Rotary pumps: 1. have tight clearances on all moving parts 2. deliver high pressure liquid without pulsations 3. are positive displacement units 4. should not be started with discharge closed

Rotary pumps:
1. have tight clearances on all moving parts
2. deliver high pressure liquid without pulsations
3. are positive displacement units
4. should not be started with discharge closed

a) 1
b) 1, 2
c) 1, 2, 3
d) 1, 2, 3, 4
e) 2, 3





Answer: D

Cavitation of a pump refers to, when:

Cavitation of a pump refers to, when:

a) the pump is filled with air
b) the pump is filled with vapour
c) the oil ring is damaged
d) the suction valve is open
e) the pump is steam driven





Answer: B