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

Turbine pumps: 1. are high capacity pumps 2. are high pressure pumps 3. has the liquid gain energy in a number of impulses

Turbine pumps:
1. are high capacity pumps
2. are high pressure pumps
3. has the liquid gain energy in a number of impulses

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






Answer: C

A diffuser pump: 1. has stationary guide vanes surrounding the impeller 2. has a higher efficiency than a volute type 3. has high suction lift 4. does not have to be primed

A diffuser pump:
1. has stationary guide vanes surrounding the impeller
2. has a higher efficiency than a volute type
3. has high suction lift
4. does not have to be primed

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

Answer: D

A double-acting pump

A double-acting pump

a) has two pistons on the pump end
b) will always be driven by the steam pistons
c) has two pistons on the driver end
d) will have two slide valves
e) is a positive displacement pump



Answer: E

Rotary pumps: 1. are high pressure pumps 2. must be primed 3. use mechanical seals 4. are positive displacement pumps

Rotary pumps:
1. are high pressure pumps
2. must be primed
3. use mechanical seals
4. are positive displacement pumps

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




Answer: C

The total static head of a pump

The total static head of a pump

a) is the capacity of the pump
b) is the difference between the static suction head and the static discharge head
c) is the discharge pressure in metres
d) is all the parts of the pump casing
e) is the discharge head of the pump




Answer: B

The vertical distance from the liquid surface up to the pump centre-line plus the vertical distance from the pump centre-line up to the surface of the liquid in the discharge tank is

The vertical distance from the liquid surface up to the pump centre-line plus the vertical distance from the pump centre-line up to the surface of the liquid in the discharge tank is

a) static discharge head
b) static suction head
c) suction lift
d) total discharge head
e) total static head






Answer: E

A circulating pump is usually:

A circulating 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
e. A high head pump





Answer: A

When a pump discharges into a vessel operating at 300 kPa, the 300 kPa is referred to as:

When a pump discharges into a vessel operating at 300 kPa, the 300 kPa is referred to as:

a. Dynamic head
b. Equivalent head
c. Discharge head
d. Friction head
e. Total head





Answer: B

The difference between static suction head and static discharge head is:

The difference between static suction head and static discharge head is:

a. Total static head
b. Static discharge head
c. Static suction head
d. Equivalent head
e. Dynamic head






Answer: A

A pump is capable of suction lift due to:

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. Its size
e. Atmospheric pressure




Answer: E

A hot water heating system circulator should:

A hot water heating system circulator should:

a. Be directly coupled
b. Have its own vibration free base
c. Be quiet in operation
d. Develop an extremely high differential pressure
e. Not run continuously




Answer: C

Rotary pumps:

Rotary pumps:

a. Are low-pressure pumps
b. Must be primed before each use
c. Are positive displacement pumps
d. Must use mechanical seals
e. Have tight clearances on all moving parts






Answer: C

The name given to the category of pumps that use gear teeth, vanes, or lobes to move the fluid being pumped is the _____ type.

The name given to the category of pumps that use gear teeth, vanes, or lobes to move the fluid being pumped is the _____ type.

a. Reciprocating
b. Axial flow
c. Radial flow
d. Dynamic
e. Rotary





Answer: E

When a reciprocating pump delivers fluid every second stroke of its piston, it is called a ___________ pump:

When a reciprocating pump delivers fluid every second stroke of its piston, it is called a ___________ pump:

a. Positive displacement
b. Single acting
c. Two-stage
d. Double acting
e. Duplex





Answer: B