Pumps

Question 1

Mechanical device that transfers liquid against gravity or exhaust gasses?

Answer 1

Pump

Question 2

Amount of liquid a pump can move in a given time?

Answer 2

Capacity

Question 3

2 ways to measure pump pressure:

Answer 3

1) PSI
2) Head

Question 4

Height of a column of fluid?

Answer 4

Head

Question 5

3 things affect capacity:

Answer 5

1) Size of pumping element
2) RPM
3) Viscosity

Question 6

Pumps capacity is rated in?

Answer 6

GPM

Question 7

Pressure at the discharge end of the pump?

Answer 7

Discharge head

Question 8

Fluid is fed to pump at or above intake?

Answer 8

Positive head

Question 9

When a vacuum is required to lift fluid into a pump?

Answer 9

Negative head

Question 10

2 methods of sealing a rotating shaft:

Answer 10

1) Compression packing
2) Mechanical seal

Question 11

Centrifugal pumps have to be primed because they do not have a _____ _____?

Answer 11

Positive seal

Question 12

2 types of centrifugal pumps:

Answer 12

1) Split case
2) End suction

Question 13

3 types of impellers:

Answer 13

1) Open
2) Semi closed
3) Closed

Question 14

Impeller between bearings is called ____ ____?

Answer 14

Between bearing

Question 15

Between bearing impellers are common in ______ _____ pumps?

Answer 15

Split case

Question 16

End suction pumps have what’s called an ______ configuration.

Answer 16

Overhung

Question 17

Major disadvantage to single stage impellers?

Answer 17

Limits pressure

Question 18

3 ways to mount pumps:

Answer 18

1) Frame mount
2) C-frame
3) Close coupled

Question 19

What mounting method aligns the motor to pump?

Answer 19

Frame mount

Question 20

What mounting method describes a pump being attached directly to the motor shaft?

Answer 20

Close coupled

Question 21

4 components to packing a pump:

Answer 21

1) Stuffing box
2) Lantern ring
3) Packing
4) Gland follower

Question 22

3 characteristics of flush water:

Answer 22

1) Cools shaft
2) Keeps packing swole
3) Flush away contaminants

Question 23

_____ _____ can come from an external source or from the pump itself?

Answer 23

Flush water