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1. What is the primary function of a fire pump on an apparatus?
A. Store water for long incidents
B. Increase water pressure for firefighting operations
C. Filter contaminants from hydrants
D. Measure water flow accuracy
Answer: B
Rationale: The fire pump’s main function is to boost incoming water pressure so it can
be effectively delivered through hoses and nozzles for firefighting operations.
2. Which source typically supplies water to a fire pump during urban operations?
A. Static pond
B. Booster tank only
C. Hydrant system
D. Portable reservoir
Answer: C
Rationale: In urban settings, hydrants are the most common and reliable pressurized
water source for fire pumps.
3. What is cavitation in a fire pump?
A. Excessive hose pressure
B. Air bubbles forming due to low pressure
,C. Overheating of pump casing
D. Water contamination in tank
Answer: B
Rationale: Cavitation occurs when pressure drops inside the pump, causing vapor
bubbles that can damage impellers and reduce efficiency.
4. What is the purpose of a relief valve on a fire pump?
A. Increase water temperature
B. Prevent over-pressurization
C. Control hose length
D. Filter incoming debris
Answer: B
Rationale: Relief valves prevent excessive pressure buildup that could damage hoses
or injure firefighters.
5. What does RPM stand for in pump operations?
A. Rapid Pressure Measurement
B. Revolutions Per Minute
C. Rated Pump Maximum
D. Required Pressure Mode
Answer: B
Rationale: RPM measures how fast the pump shaft is rotating, directly affecting output
pressure and flow.
6. What is the purpose of priming a pump?
A. Increase hose diameter
B. Remove air from the pump
C. Cool the engine
D. Increase tank capacity
, Answer: B
Rationale: Priming removes air so that water can be drawn into the pump from a static
source.
7. Which device measures discharge pressure?
A. Tachometer
B. Intake gauge
C. Pressure gauge
D. Flow meter
Answer: C
Rationale: The discharge gauge shows the pressure of water leaving the pump to the
hoses.
8. What is the effect of friction loss in a hose line?
A. Increases flow rate
B. Reduces pressure at nozzle
C. Improves water quality
D. Increases pump RPM automatically
Answer: B
Rationale: Friction loss reduces the available pressure at the nozzle as water travels
through hose lines.
9. What is the most common cause of pump overheating?
A. Excessive lubrication
B. Recirculating water too long
C. Low engine RPM
D. Cold water supply
Answer: B
Rationale: Prolonged recirculation without discharge flow can cause heat buildup inside
the pump.