Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Steamfitter/pipefitter > Introduction To Pumps > Flashcards

Introduction To Pumps Flashcards

0
Q

Positive displacement pumps cannot handle entrained air

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

All positive displacement pumps have pumping chambers

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Double-acting piston pumps discharge an equal amount of liquids on all strokes

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which one of the following reciprocating pumps can be allowed to run dry

A

Diaphragm pump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Rotary pumps produce a smoother flow than reciprocating pumps

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which of the following pumps is not dynamic

A

Reciprocating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the definition of absolute pressure

A

Gauge pressure plus atmospheric pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the equivalent head of oil when a pressure gauge reads 100 psi (the oil density is 56lb/ft3

A

257

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

As pressure is reduced, the boiling point of a liquid decreases?

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What occurs in a pump when a liquid vaporizes in a closed system

A

Cavitation occurs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

A tank 20’ high is full of brine,the RD of brine is 1.03. What would the reading be on a pressure gauge connected to a pipe leading from the bottom of the tank

A

8.9 psig

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What could cause cavitation to occur

A

An increase in liquid velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

In a closed system, as the velocity energy increases,

The pressure energy decreases?

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

When the pump inlet is above the level of liquid in the supply reservoir, the pump has a suction head?

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What source of energy is available to allow liquid to enter a pump with suction lift

A

Atmospheric pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Which pump component converts mechanical energy to kinetic energy?

A

Impeller

16
Q

What value must the NPSHa be for proper pump operation

A

Less than the NPSHa

17
Q

Diffusers :

A

Are stationary

18
Q

Unless otherwise stated, pump performance curves are based on handling of what type of fluid

A

Cold water

19
Q

Pump curves are provided by the pump manufacturer

A

True

20
Q

What does not contribute to friction loss through pipes

A

Increase in atmospheric pressure

21
Q

What could be a possible cause for an increase in differential pressure across a strainer

A

The strainer needs to be cleaned

22
Q

When you have a safe work permit to service a pump,what is the first thing you must do before commencing work

A

Isolate the pump’s prime mover (tagged and locked out )

Steamfitter/pipefitter (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions