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Centrifugal Pump

Total questions: 17

Worksheet time: 5mins

Name
Class
Date
1.

When the fluid is forced away from the center, or the eye of the impeller, a ____ is created thus resulting to flowing of more liquid.

a)

centrifugal force

b)

positive displacement

c)

vacuum

d)

negative displacement

2.

Type of a centrifugal pump that borrows characteristics from both radial flow and axial flow pumps.

a)

Radial Flow Pump

b)

Mixed Flow Pump

c)

Axial Flow Pump

3.

It is a type of pump casing design that has an offset impeller creating a curved funnel with an increasing cross-sectional area towards the pump outlet which causes the fluid pressure to increase towards the outlet.

a)

vortex

b)

volute

c)

diffuser

d)

rotary

4.

It is used for a wide variety of industrial applications thanks to their increased efficiency and ability to pump fluids at higher pressures.

a)

Multistage centrifugal pumps

b)

Single stage pump

c)

Circulator pump

5.

It is a rotating component of a centrifugal pump that accelerates fluid outward from the center of rotation, thus transferring energy from the motor that drives the pump to the fluid being pumped.

a)

Impeller

b)

Coupling

c)

Shaft

d)

Stuffing Box

6.

Centrifugal pumps can also develop a phenomenon called “cavitation”.

a)

True

b)

False

7.

When the sealing is achieved by means of packing, the chamber is referred to as a ___________.

a)

Stuffing Box

b)

Nozzle

c)

Casing

d)

Seal Chamber

8.

A pump moves fluids from ___ pressure to ____ pressure.

a)

lower, higher

b)

lower, atmospheric

c)

higher, lower

d)

higher, atmospheric

9.

When the sealing is achieved by means of a mechanical seal, the chamber is commonly referred to as a ___________.

a)

Stuffing Box

b)

Nozzle

c)

Casing

d)

Seal Chamber

10.

Type of a centrifugal pump where the liquid enters at the center of the impeller and is directed out along the impeller blades in a direction at right angles to the pump shaft.

a)

Radial Flow Pump

b)

Mixed Flow Pump

c)

Axial Flow Pump

11.

Type of a centrifugal pump where the impeller pushes the liquid in a direction parallel to the pump shaft.

a)

Radial Flow Pump

b)

Mixed Flow Pump

c)

Axial Flow Pump

12.

Multistage centrifugal pump consists of two or more __________.

a)

Impellers

b)

Suction head

c)

Pump

13.

Multistage centrifugal pumps have the following two advantages except ______.

a)

to produce a high head

b)

has higher unbalanced thrust and radial forces at off-design flow rates

c)

to produce a large quantity of liquid

14.

Ferrous particles in liquid are not problematic when you are using magnetic drive.

a)

True

b)

False

15.

Low flow of liquid due to not priming properly cannot lead to overheating of the pump.

a)

True

b)

False

16.

A dead-head is caused when a centrifugal pump operates with no flow through the pump due to a closed discharge valve or blockage in the line.

a)

True

b)

False

17.

Its goal is to ensure that the pump is actually not moving the fluid downstream by confirming that there is no flow downstream or, in the case of liquid centrifugal pumps, the pump is primed or not in air lockup.

a)

True

b)

False