4B Power Engineering: Unit 2 - Pumps And Compresso
4B Power Engineering: Unit 2 - Pumps and Compresso
Exam (elaborations)
4B Power Engineering: Unit 2 - Pumps and Compressors || with 100% Error-free Answers.
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4B Power Engineering: Unit 2 - Pumps and Compresso
Institution
4B Power Engineering: Unit 2 - Pumps And Compresso
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 answers d
The fact that different shaped con...
4B Power Engineering: Unit 2 - Pumps and Compressors ||
with 100% Error-free 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 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 correct 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 correct 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 correct 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 correct 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 correct 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 correct 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 correct 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 correct 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 correct 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 correct 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 correct 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 correct 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 correct 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
d. pressure head correct answers a
The pressure exerted at the base of a column of liquid depends on:
Select one:
a. the height of the liquid
b. the density of the liquid
c. the mass of the liquid
d. the volume of the liquid correct answers a
A pump in which fluid is moved or compressed on only one stroke of the pressure imposing
element is known as:
Select one:
a. double acting
b. simple acting
c. stroke acting
d. single acting correct answers d
, This type of pump consists of one or more impellers, rapidly rotating in a casing:
Select one:
a. lobe pump
b. gear pump
c. centrifugal pump
d. sliding vane pump correct answers c
The sudden vapour cavity formation, growth, and subsequent collapse that occurs in a saturated
liquid due to local pressure fluctuations is known as:
Select one:
a. vapor compression
b. regeneration
c. cavitation
d. water hammer correct answers c
In this type of positive displacement pump, rotation creates a void that moves liquid from the
pump suction to discharge:
Select one:
a. reciprocating
b. rotary
c. centrifugal
d. dynamic correct answers b
Mechanical seals can be divided into two general types. They are:
Select one:
a. rotating mechanical seals / wearing mechanical seals
b. rotating mechanical seals / stationary mechanical seals
c. stationary mechanical seals / wearing mechanical seals
d. wearing mechanical seals / wearing ring seals correct answers b
A device that connects two shafts mechanically and transmits power from one shaft to another is
called a:
Select one:
a. coupling
b. connector
c. fastener
d. clamp correct answers a
In the rotating mechanical seal arrangement, the _________ turns with the shaft:
Select one:
a. stationary ring
b. wear ring
c. sealing ring
d. mating ring correct answers c
The only moving parts of a centrifugal pump are the:
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