DPO FULL REVIEW
(QUESTIONS &
ANSWERS) 2024
RATED 100%
CORRECT!!
DPO
Evatee 8/8/24 DPO
, DPO FULL REVIEW (QUESTIONS & ANSWERS)
2024 RATED 100% CORRECT!!
Using the coefficient method, determine the friction loss in the hose assembly
for two - 3-inch lines with 2-1/2 couplings, 1000ft long, attached to a Siamese
then 300ft of 2-1/2 flowing a smoothbore handline 1-1/8" tip @50 psi. Answer
- Q = 266, so 13.5 for the Siamese, 40.5 for the 2-1/2, appliance doesn't factor
in because less than 350 GPM. FL = 54
Using the hand method what is the pump discharge pressure for supplying
400ft of 2-1/2" with a fog nozzle flowing 250 GPM? Answer - PDP = 150
Apparatus with on board tanks larger than 500 gallons must provide a
minimum flow rate of what? Answer - 500 GPM (tank-to-pump)
Which type of primer uses the venturi principle as part of its orientation?
Answer - exhaust primer
What is something a centrifugal pump with take advantage of? Answer -
Positive intake pressures (hydrants, nurse feeds, relays)
During extended periods of time, you notice an increase in engine
temperature. What is one thing you can do to reduce that? (Other than
circulating water) Answer - open the auxiliary cooling valve
How much is the collapse zone? Answer - one and a half times the building
height
(QUESTIONS &
ANSWERS) 2024
RATED 100%
CORRECT!!
DPO
Evatee 8/8/24 DPO
, DPO FULL REVIEW (QUESTIONS & ANSWERS)
2024 RATED 100% CORRECT!!
Using the coefficient method, determine the friction loss in the hose assembly
for two - 3-inch lines with 2-1/2 couplings, 1000ft long, attached to a Siamese
then 300ft of 2-1/2 flowing a smoothbore handline 1-1/8" tip @50 psi. Answer
- Q = 266, so 13.5 for the Siamese, 40.5 for the 2-1/2, appliance doesn't factor
in because less than 350 GPM. FL = 54
Using the hand method what is the pump discharge pressure for supplying
400ft of 2-1/2" with a fog nozzle flowing 250 GPM? Answer - PDP = 150
Apparatus with on board tanks larger than 500 gallons must provide a
minimum flow rate of what? Answer - 500 GPM (tank-to-pump)
Which type of primer uses the venturi principle as part of its orientation?
Answer - exhaust primer
What is something a centrifugal pump with take advantage of? Answer -
Positive intake pressures (hydrants, nurse feeds, relays)
During extended periods of time, you notice an increase in engine
temperature. What is one thing you can do to reduce that? (Other than
circulating water) Answer - open the auxiliary cooling valve
How much is the collapse zone? Answer - one and a half times the building
height
