Pumps And pumping 1965

Question 1

Normal atmospheric pressure at sea level

Answer 1

14.7psi

Question 2

Max theoretic lift of water via suction

Answer 2

33.9’

Question 3

Max lift in practice

Answer 3

26-28’

Question 4

Operating lift for fire pumps don’t exceed

Answer 4

15-20’

Question 5

Piston pumps are

Answer 5

Positive displacement pumps

Question 6

Rotary pumps used to prime

Answer 6

Centrifugal pumps; expel water and air

Question 7

3 types of centrifugal pumps

Answer 7

Single stage
Multi stage
Parallel series

Question 8

Centrifugal pump is ___ type of pump.

Answer 8

Flow through

Question 9

Priming pump must create ____ Mercury vacuum.

Answer 9

22”

Question 10

1250 GPM pump lifts 10’ in ____ sec

Answer 10

30 sec

Question 11

1500 GPM pump lifts 10’ in ___ sec

Answer 11

45 sec

Question 12

Relief valves must limit rise to ___ psi above set pressure

Answer 12

20psi

Question 13

Relief valves when maintained will limit rise to ___ psi above set pressure

Answer 13

10 psi

Question 14

3 kinds of Bourban gauges

Answer 14

Pressure, vacuum, compound

Question 15

Water temperature of ___ will give problems when drafting

Answer 15

95-100F

Question 16

Class A pump ratings

Answer 16

100% at 150psi
75% at 200psi
50% at 250psi

Question 17

Water weighs ___/gal

Answer 17

8.5lbs

Question 18

If pumping from draft try to limit lift to

Answer 18

10-12’

Question 19

Strainer submerged

Answer 19

18” from top, 12” from bottom

Question 20

Suction gauge should not register less than ___ psi of incoming pressure.

Answer 20

5psi