Ch.7

Question 1

Actual pressure of the water as it leaves the pump and enters the hose line?

Answer 1

Pump discharge pressure

Question 2

It is assumed that there is a ___ psi loss for flows less than 350gpm and a ___ psi loss for each appliance flowing 350 or greater?

Answer 2

0 psi (350 less)

10 psi (350 greater)

Question 3

Actual amount of pressure being produced by the pump?

Answer 3

Net pump discharge pressure

Question 4

Low pressure fog nozzles pressures are ___ or ___ psi?

Answer 4

50 or 75psi

Question 5

Friction loss is caused by a number of factors including the condition of the hose and couplings as well as any kinks in the hose line, however the primary consideration is the _________ of water flowing per min?

Answer 5

Volume

Question 6

The only truly accurate method for determining pressure loss in a particular hose lay involved measuring the pressure at both ends of the hose line and __________ the difference ?

Answer 6

Subtracting

Question 7

The _______ hose lay , wether used as a supply or attack line , presents the simplest friction loss calculation?

Answer 7

Single hose lay