4th Class Power Engineering Unit B2: Pumps and Compressors Exam 2025 Questions and Answers

4th Class Power Engineering Unit B2:
Pumps and Compressors Exam 2025
Questions and Answers


This is the distance between the surface of the liquid level of a supply source located below a pump

and the center line of the pump:

Select one:

a. total static head

b. static discharge head

c. static suction head


d. static suction lift - CORRECT ANSWER✔️✔️-d


The fact that different shaped containers, filled with liquid of the same height, have the same applied

force by the liquid on the base of each container, is referred to as:

Select one:

a. Peterʼs Paradox


b. Pascalʼs Paradox



FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1

,c. Pandaʼs Paradox


d. Peristalticʼs Paradox - CORRECT ANSWER✔️✔️-b


The head required to overcome friction and develop velocity is called:

Select one:

a. friction head

b. velocity head

c. dynamic head


d. static head - CORRECT ANSWER✔️✔️-c


The total height a liquid is moved by a pump plus the total discharge pressure head if pumping into

a pressurized vessel is called:

Select one:

a. total dynamic head

b. total static head

c. total suction head


d. total pressure head - CORRECT ANSWER✔️✔️-b


These pumps supply potable water from wells or other sources:

Select one:

a. circulating water pumps




FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2

,b. fire pumps

c. boiler feedwater pumps


d. domestic water pumps - CORRECT ANSWER✔️✔️-d


This is the rotating element of a dynamic pump, used to transfer mechanical energy to a fluid: Select

one:

a. impeller

b. volute

c. vane


d. diffuser - CORRECT ANSWER✔️✔️-a


Common types of pumps used in industrial plants include:

1. boiler feedwater pumps

2. fire pumps

3. chemical feed pumps

4. circulating water pumps

5. lubricating oil pumps

6. domestic water pumps

Select one:

a. 1, 2, 3, 4, 5, 6

b. 1, 2, 3, 4, 5


FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 3

, c. 1, 3, 4, 5, 6


d. 1, 2, 3, 4, 6 - CORRECT ANSWER✔️✔️-a


This is a pump in which the pressure imposing element consists of a piston, plunger, or diaphragm

that moves back and forth, thus displacing liquid:

Select one:

a. regenerative pump

b. rotary pump

c. reciprocating pump


d. turbine pump - CORRECT ANSWER✔️✔️-c


The absolute pressure of a fluid, measured at the inlet of a pump is known as:

Select one:

a. net positive suction velocity

b. net positive suction pressure

c. net positive suction flow


d. net positive suction head - CORRECT ANSWER✔️✔️-d


The pressure exerted at the base of a column of liquid, measured in meters is known as:

Select one:

a. suction head




FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 4