Quiz Questions 2

Question 1

For drafting purposes, how is lift measured?

Question 2

Q
When attack lines are used intermittently during pump operations, how does a pump operator ensure at the pump does not overheat?

Question 3

How is the transition made from the water tank to the external water supply?

Question 4

What nozzle reaction does a 32 mm tip with 350 kPa nozzle pressure produce?

Question 5

What is the formula .067 x d² x √NP used to estimate?

Question 6

What is a hydrant with the largest capacity connected to?

Answer 6

Primary feeder

Question 7

What is the procedure to increase the efficiency of water shuttle operations?

Answer 7

Vacuum tenders

Question 8

When water suddenly stops moving through a hose, what is the result?

Answer 8

Water hammer
(energy surge being transmitted in the opposite direction)

Question 9

An apparatus is equipped with a 5,000 litre tank that supplies two preconnected hoselines; one flowing 600 litres per minute and the other flowing 400 litres per minute. How many minutes of agent applications are available?

Question 10

While drafting and flowing water, a pump operator sees is a reading of -75 kPa on the compound gauge. What does this indicate?

Question 11

If the friction loss in 90 metres of hose is 490 kPa, what is the friction loss in 135 metres of the same size hose that is flowing the same amount of water?

Answer 11

729 KPA

Question 12

What is the friction loss in 120 metres of 65 mm hose flowing 1200 litres per minute?

Answer 12

221.76 KPA

Question 13

In a relay pumping operation, what is the purpose of the attack pumper?

Answer 13

Supplying attack lines and appliances for fire suppression.

Question 14

In order to prevent damage during a relay operation, which apparatus initiates shutdown?

Answer 14

Attack pumper

Question 15

What is the last apparatus to shut down in a relay operation?

Answer 15

Pumper farthest from attack pumper.

Question 16

What is the formula for Friction Loss (FL)?

Answer 16

FL= CQ 2 L

Question 17

What does C stand for in the FL formula?

Answer 17

Coeficient

Question 18

What does Q stand for in the FL formula?

Answer 18

GPM

Question 19

What does L stand for in the FL formula?

Answer 19

Hose length

Question 20

What is the FL coefficient for 38mm hose?

Question 21

What is the FL coefficient for 45mm hose?

Question 22

What is the FL coefficient for 65mm hose?

Answer 22

2

Question 23

What is the formula to determine water flow from a smooth bore nozzle?

Question 24

When the intake pressure Falls below 140 kPa during relay pumping what does that signal?

Question 25

What is the principle that causes foam concentrate to move through an inline foam eductor and into the water stream?

Question 26

What factors are considered When selecting a foam proportioner?

Question 27

The nozzle crew indicates there is not enough foam at the nozzle how does the pump operator correct this problem?

Question 28

Pump operator, using an in-line eductor, notices the phone being generated is of poor quality. What is the reason for his failure?

Question 29

When pumping to an automatic standpipe system what friction loss does a pump operator allow?

Question 30

What is the friction loss constant added to the discharge pressure for each the standpipe connection?

Question 31

What is the hose lay that is used from the fire to the water?

Answer 31

Reverse lay