Pumper Chapter 7

In the formula FL = C · Q² · L, what does Q stand for? pg212

• Flow rate in hundreds of gallons per minute

• Friction loss

• Hose length

• Amount of total water being used

When two hoselines of equal length are joined together using a siamese appliance, friction lose is approx. __% less than that of a single hoseline at the same nozzle pressure. pg216

• 25

• 30

• 15

• 10

Which term best describes the "Net Pump Discharge Pressure"? pg219

• Intake Pressure - The pressure at which water enters the pump from a water source.

• Total Discharge Pressure - The sum of all pressures within the pump system, including intake pressure and discharge pressure.

• Engine Pressure - Also known as just Net Pressure, it refers to the actual pressure being produced by the pump, calculated by the difference between the intake pressure and the discharge pressure.

• Pump Efficiency - The ratio of the output power to the input power of the pump, indicating how effectively the pump converts input power into pressure energy.

Which of the following is not a type of appliance? pg213

• Wye

• Siamese

• Any Nozzle

• These are all forms of appliances

Which statement accurately defines Pump Discharge Pressure (PDP)? pg218

• PDP is the pressure exerted on the pump's intake side as water enters the pump from a water source.

• PDP refers to the pressure measured at the nozzle end of a hose line during firefighting operations.

• PDP is the actual pressure of the pump as it leaves the pump and enters the hoseline, representing the total amount of pressure being discharged by the pump. In mathematical terms, it is the sum of the pressure and the net pump discharge pressure.

• PDP is the pressure differential between the pump's intake and discharge sides, indicating the efficiency of the pump's operation.