PUMPS 21-40

Question 1

Which type of pump is commonly used in hydraulic
systems?
a) Centrifugal pump
b) Diaphragm pump
c) Gear pump
d) Reciprocating pump

Answer 1

c) Gear pump

Question 2

What is the term for the ratio of the actual pump head
to the theoretical pump head?
a) Cavitation ratio
b) Efficiency ratio
c) Specific speed
d) NPSH ratio

Answer 2

b) Efficiency ratio

Question 3

Which of the following pumps is typically used for
high-pressure applications?
a) Centrifugal pump
b) Diaphragm pump
c) Reciprocating pump
d) Axial flow pump

Answer 3

c) Reciprocating pump

Question 4

What is the primary disadvantage of using a
peristaltic pump?
a) Limited flow rate
b) High maintenance requirements
c) Inability to handle abrasive fluids
d) Susceptibility to cavitation

Answer 4

a) Limited flow rate

Question 5

Which factor does NOT affect the suction lift
capability of a pump?
a) Pump speed
b) Fluid density
c) Atmospheric pressure
d) Impeller diameter

Answer 5

d) Impeller diameter

Question 6

What is the purpose of a pump priming system?
a) To increase flow rate
b) To reduce cavitation
c) To remove air from the pump casing
d) To regulate pressure

Answer 6

c) To remove air from the pump casing

Question 7

Which of the following pumps is typically used for
dosing chemicals in industrial processes?
a) Centrifugal pump
b) Diaphragm pump
c) Gear pump
d) Peristaltic pump

Answer 7

d) Peristaltic pump

Question 8

What is the term for the maximum flow rate a pump
can deliver?
a) Discharge pressure
b) Flow capacity
c) Pump head
d) Pump efficiency

Answer 8

b) Flow capacity

Question 9

Which type of pump is commonly used in oil
refineries for transferring fluids between process
units?
a) Centrifugal pump
b) Diaphragm pump
c) Reciprocating pump
d) Screw pump

Answer 9

d) Screw pump

Question 10

What is the primary advantage of using a magnetic
drive pump?
a) High flow rate
b) Low maintenance
c) Ability to handle high temperatures
d) Ability to handle abrasive fluids

Answer 10

b) Low maintenance

Question 11

What is the term for the resistance to flow in a pump
system?
a) Friction head
b) Total dynamic head
c) Cavitation head
d) NPSH head

Answer 11

a) Friction head

Question 12

Which of the following is NOT a component of a
reciprocating pump?
a) Piston
b) Valve
c) Impeller
d) Cylinder

Answer 12

c) Impeller

Question 13

What is the primary function of a pump seal?
a) To regulate flow rate
b) To prevent leakage
c) To increase pressure
d) To reduce cavitation

Answer 13

b) To prevent leakage

Question 14

Which of the following pumps is typically used for
pumping sewage?
a) Centrifugal pump
b) Diaphragm pump
c) Reciprocating pump
d) Submersible pump

Answer 14

d) Submersible pump

Question 15

What is the term for the energy added to the fluid by
the pump?
a) Pressure head
b) Kinetic head
c) Shaft head
d) Power head

Answer 15

a) Pressure head

Question 16

Which pump is commonly used for pumping
corrosive fluids?
a) Centrifugal pump
b) Diaphragm pump
c) Gear pump
d) Jet pump

Answer 16

b) Diaphragm pump

Question 17

What is the purpose of a pump curve?
a) To show the efficiency of the pump
b) To show the flow rate versus head of the pump
c) To show the pressure drop across the pump
d) To show the temperature rise in the pump

Answer 17

b) To show the flow rate versus head of the pump

Question 18

Which of the following is a characteristic of a
centrifugal pump?
a) Self-priming
b) Positive displacement
c) High suction lift capability
d) Low flow rate

Answer 18

a) Self-priming

Question 19

Which pump is commonly used for transferring
liquids from one container to another?
a) Centrifugal pump
b) Diaphragm pump
c) Gear pump
d) Peristaltic pump

Answer 19

c) Gear pump

Question 20

What is the term for the flow rate at which a pump
operates most efficiently?
a) Maximum flow rate
b) Optimal flow rate
c) Critical flow rate
d) Minimum flow rate

Answer 20

b) Optimal flow rate