4th Class Power Engineering Unit B2: Pumps and Compressors Test Questions and Answers Fully Solved

4th Class Power Engineering Unit B2: Pumps and Compressors Test Questions and Answers Fully
Solved

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 - Answers 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

c. Pandaʼs Paradox

d. Peristalticʼs Paradox - Answers 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 - Answers 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 - Answers b

These pumps supply potable water from wells or other sources:

Select one:

a. circulating water pumps

b. fire pumps

c. boiler feedwater pumps

d. domestic water pumps - Answers 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 - Answers 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

c. 1, 3, 4, 5, 6

,d. 1, 2, 3, 4, 6 - Answers 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 - Answers 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 - Answers d

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

Select one:

a. suction head

b. velocity head

c. static head

d. pressure head - Answers c

The movement of the pumps piston or plunger in the cylinder, in one direction, is called the _________
of the piston or plunger:

Select one:

a. stroke

b. action

c. length

, d. displacement - Answers a

These pumps circulate oil to the bearings of machines in industrial plants:

Select one:

a. circulating water pumps

b. domestic water pumps

c. lubricating oil pumps

d. fuel oil pumps - Answers c

A positive displacement pump that has a single helical stainless steel rotor fit tightly within an elastomer
lined stator is known as a:

Select one:

a. screw pump

b. peristaltic pump

c. sliding vane pump

d. progressive cavity pump - Answers d

This positive displacement pump consists of sliding parts, held within an eccentric rotor, in a casing:

Select one:

a. centrifugal

b. sliding lobe

c. sliding vane

d. sliding gear - Answers c

The distance between the center line of a pump and the surface of the liquid in an elevated supply tank
is known as:

Select one:

a. static suction head

b. static suction lift

c. static discharge head