Question 1

Which of the following is a main component of a centrifugal pump?

Accepted Answer

A)  Piston 
B)  Propeller 
C)  Lobes 
D)  Volute 
A)  Piston 
B)  Propeller 
C)  Lobes 
D)  Volute D

Question 2

What should be done to prevent a pump from cavitation?

Accepted Answer

A)  Lubrication 
B)  Recycle loops 
C)  Priming 
D)  Maintenance 
A)  Lubrication 
B)  Recycle loops 
C)  Priming 
D)  Maintenance C

Question 3

What can be used to allow fluid flow circulation if the discharge valves or other downstream valves are closed?

Accepted Answer

A)  Cavitation 
B)  Recycle loops 
C)  Priming 
D)  Vibration 
A)  Cavitation 
B)  Recycle loops 
C)  Priming 
D)  Vibration B

Question 4

What can pumps be driven by?

Accepted Answer

A)  Air 
B)  Electric motors 
C)  Steam turbines 
D)  All of the above 
A)  Air 
B)  Electric motors 
C)  Steam turbines 
D)  All of the above

Question 5

Which of the following symbols represents a centrifugal pump?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 6

What type of pump uses the inward stroke of a piston or diaphragm to draw (intake) liquid into a chamber and then uses an outward stroke to positively displace (discharge) the liquid?

Accepted Answer

A)  Axial pump 
B)  Rotary pump 
C)  Centrifugal pump 
D)  Reciprocating pump 
A)  Axial pump 
B)  Rotary pump 
C)  Centrifugal pump 
D)  Reciprocating pump

Question 7

What type of pump moves liquids by rotating a screw or a set of lobes, gears, or vanes that trap the liquid and physically push it through the pump?

Accepted Answer

A)  Axial pump 
B)  Rotary pump 
C)  Centrifugal pump 
D)  Reciprocating pump 
A)  Axial pump 
B)  Rotary pump 
C)  Centrifugal pump 
D)  Reciprocating pump

Question 8

Why are centrifugal pumps used more often than positive displacement pumps?

Accepted Answer

A)  They are more effective 
B)  They are less expensive 
C)  They require more space 
D)  They are more complex to operate 
A)  They are more effective 
B)  They are less expensive 
C)  They require more space 
D)  They are more complex to operate

Question 9

Which of the following is an example of a positive displacement pump?

Accepted Answer

A)  Axial 
B)  Rotary screw pump 
C)  Multi-stage centrifugal 
D)  Single-stage centrifugal 
A)  Axial 
B)  Rotary screw pump 
C)  Multi-stage centrifugal 
D)  Single-stage centrifugal

Question 10

What should process technicians do when monitoring and maintaining pumps?

Accepted Answer

A)  Check gas levels to make sure they are satisfactory 
B)  Check seals and flanges to make sure there are no leaks 
C)  Feel for leakages 
D)  Check to make sure water is being used as a lubricant 
A)  Check gas levels to make sure they are satisfactory 
B)  Check seals and flanges to make sure there are no leaks 
C)  Feel for leakages 
D)  Check to make sure water is being used as a lubricant

Question 11

Which of the following is a key characteristic of cavitation?

Accepted Answer

A)  Small pressure fluctuations 
B)  Consistent flow rate 
C)  Severe vibration 
D)  Leakage 
A)  Small pressure fluctuations 
B)  Consistent flow rate 
C)  Severe vibration 
D)  Leakage

Question 12

Which of the following symbols represents a positive displacement pump?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 13

What type of pump uses a propeller or row of blades to propel liquids axially along the shaft?

Accepted Answer

A)  Axial pump 
B)  Rotary pump 
C)  Centrifugal pump 
D)  Reciprocating pump 
A)  Axial pump 
B)  Rotary pump 
C)  Centrifugal pump 
D)  Reciprocating pump

Question 14

Which of the following is a main component of a rotary pump?

Accepted Answer

A)  Shaft 
B)  Packing/seal 
C)  Inlet check valve 
D)  Outlet check valve 
A)  Shaft 
B)  Packing/seal 
C)  Inlet check valve 
D)  Outlet check valve

Question 15

What is the pressure called that is developed when the speed generated by the centrifugal force is slowed in the volute of the pump casing?

Accepted Answer

A)  Liquid head 
B)  Deadhead pressure 
C)  Liquid pressure 
D)  Centrifugal force 
A)  Liquid head 
B)  Deadhead pressure 
C)  Liquid pressure 
D)  Centrifugal force

Question 16

What type of pump uses an impeller on a rotating shaft to generate centrifugal force, which is converted to pressure in the volute to move liquids?

Accepted Answer

A)  Axial pump 
B)  Rotary pump 
C)  Centrifugal pump 
D)  Reciprocating pump 
A)  Axial pump 
B)  Rotary pump 
C)  Centrifugal pump 
D)  Reciprocating pump

Question 17

What type of pump uses impellers to generate outward force?

Accepted Answer

A)  Dynamic 
B)  Plunger 
C)  Piston 
D)  Positive displacement 
A)  Dynamic 
B)  Plunger 
C)  Piston 
D)  Positive displacement

Exam 16: Pumps

Which of the following is a main component of a centrifugal pump?

What should be done to prevent a pump from cavitation?

What can be used to allow fluid flow circulation if the discharge valves or other downstream valves are closed?

What can pumps be driven by?

Which of the following symbols represents a centrifugal pump?

What type of pump uses the inward stroke of a piston or diaphragm to draw (intake) liquid into a chamber and then uses an outward stroke to positively displace (discharge) the liquid?

What type of pump moves liquids by rotating a screw or a set of lobes, gears, or vanes that trap the liquid and physically push it through the pump?

Why are centrifugal pumps used more often than positive displacement pumps?

Which of the following is an example of a positive displacement pump?

What should process technicians do when monitoring and maintaining pumps?

Which of the following is a key characteristic of cavitation?

Which of the following symbols represents a positive displacement pump?

What type of pump uses a propeller or row of blades to propel liquids axially along the shaft?

Which of the following is a main component of a rotary pump?

What is the pressure called that is developed when the speed generated by the centrifugal force is slowed in the volute of the pump casing?

What type of pump uses an impeller on a rotating shaft to generate centrifugal force, which is converted to pressure in the volute to move liquids?

What type of pump uses impellers to generate outward force?

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