Fire Pump Math Quiz

To flow test a 3500 GPM fire pump at peak (150%) flow, you need to flow ______ GPM through approved test devices.

• 525

• 150

• 3,350

• 3,650

• 5,250

To flow test a 1,250 GPM fire pump at peak (150%) flow, you need to flow ______ GPM through approved test devices.

• 1,100

• 1,400

• 1,875

• 2,025

• 5,250

To flow test a 1000 GPM fire pump at peak (150%) flow, you need to flow ______ GPM through approved test devices.

• 850

• 1,015

• 1,150

• 1,165

• 1,500

The term feet of head is sometimes used by pump manufacturers to express pump ______.

• output

• suction pressure

• RPM

• heat production

• vibration

A pump output is rated for 150 feet of head, or about ______ PSI output. (Remember 2.31 and .433 when dealing with head pressure)

• 22

• 52

• 65

• 116

• 204

A pump output is rated for 100 feet of head, or about ______ PSI output. (Remember 2.31 and .433 when dealing with head pressure)

• 22

• 43

• 75

• 116

• 231

A pump output is rated for 100 PSI, which can be expressed as approximately ______ feet of head. (Remember 2.31 and .433 when dealing with head pressure)

• 43

• 100.433

• 143

• 231

• 331

A pump output is rated for 75 PSI, which can be expressed as approximately ______ feet of head. (Remember 2.31 and .433 when dealing with head pressure)

• 75.433

• 118

• 173

• 231

• 331

The net pressure of a horizontal split-case pump is found by taking the total pressure at the fire pump discharge flange, minus the total pressure at the ________.

• relief valve

• sprinkler test connection

• main drain connection

• top of the standpipe

• fire pump suction flange

On a horizontal split-case pump, the pressure at the suction flange is 50 PSI. The pressure at the discharge flange is 175 PSI. The net pressure produced by the pump is (a)   PSI.