Pumper 2023 with verified questions and answers

Identify TWO correct statements about conducting a daily inspection of a fire apparatus. a. confirm that the foam tank level is full b. ensure that the fire pump and booster lines are full c. operate the pump drive control. d. check to make sure the auxiliary fuel tank is at least 1/2 full a. confirm that the foam tank level is full c. operate the pump drive control The rescue tool supply system equivalent of a junction box is called: a. a manifold b. a PTO c. a rescue unit d. an RTC a. a manifold The total stopping distance: a. the distance a fire apparatus travels from the time it is started until it reaches its destination b. the distance a fire apparatus travels from the time the brakes are applied until the fire apparatus comes to a complete stop c. the sum of the driver/operator reaction distance and the fire apparatus's braking distance d. the distance a fire apparatus travels while a driver transfers his/her foot from the accelerator to the brake pedal c. the sum of the driver/operator reaction distance and the fire apparatus's braking distance If a 1 1/4-inch solid stream nozzle is flowing at 50 psi, then you know the gpm is approximately: a. 524 b. 636 c. 475 d. 328 d. 328 Determine the TPL for a hose assembly in which two 700-foot sections of 2 1/2-inch hose and one 700-foot section of 3-inch hose with 2 1/2 inch couplings are siamesed together to supply 300 feet of 3-inch hose with 2 1/2 inch couplings. Flow is 200 gpm. a. 18.46 psi b. 22.53 psi c. 30.71 psi d. 14.08 psi d. 14.08 psi Determine the TPL for a hose assembly in which 400 feet of 5-inch hose is wyed into one 200-foot section of 2 1/2-inch hose and one 300-foot section of 2 1/2-inch hose. Each attack hose is flowing at 200 gpm. a. 19 psi b. 54 psi c. 39 psi d. 29 psi c. 39 psi One of the assumptions of a maximum distance relay method is that: a. there is 20 psi of residual pressure at each relay pumper b. there is 40 psi of residual pressure ate each relay pumper c. to pump 500 gpm, a pumper's rated capacity must be 1000 gpm d. to pump 750 gpm a pumper's rated capacity must be 1000 gpm a. there is 20 psi of residual pressure at each relay pumper You arrive at a fire scene and are briefed on the situation. You conclude that a relay operation is needed. The officer tells you, "We've got a distance of about 3,000 feet from the hydrant to the fire with two, 4-inch lines." The one piece of information that you still require for the maximum distance relay method is the: a. number of available pumpers b. flow needed at scene c. number of personnel d. number of applications b. flow needed at scene In a constant pressure relay, first the flow, the number of pumpers needed, and hose size are determined. While the attack pumper starts with its internal tank, the largest capacity pumper is stationed at the hydrant and is hooked up, and all apparatus are connected. At that point, the next step for establishing a constant pressure relay is to have: a. all pumpers, except the source pumper, open their discharge valves on the dump line b. each relay pumper close its discharge valve once a steady flow of water reaches it, then advance throttle to 175 psi c. the attack pumper adjust discharge pressure to supply attack lines d. the source pumper start pumping water at 175 psi. a. all pumpers, except the source pumper, open their discharge valves on the dump line Large diameter hoses are generally defined as hoses with a diameter of between: a. 6 and 12 inches b. 2 1/2 and 5 inches c. 3 and 5 inches d. 4 and 6 inches d. 4 and 6 inches Identify the true statement about a multi-stage fire pump a. The PARALLEL/VOLUME position gives you maximum pressure over an extended period b. The PARALLEL/VOLUME position gives you maximum pressure for a short period c. The SERIES/PRESSURE position gives you maximum flow over an extended period d. The SERIES/PRESSURE position gives you maximum pressure for a short period c. The SERIES/PRESSURE position gives you maximum pressure for a short period When controlling pump valves, push-pull handles: a. are superior to quarter-turn handles because they can operate butterfly valves b. are inferior to quarter-turn handles because they cannot be locked into place. c. are best when applied only to butterfly and gate valves d. can accurately control line pressure and be locked into place. d. can accurately control line pressure and be locked into place. One characteristic of discharge pressure relief valves is that they: a. can only maintain set pressure under 250 psi b. are slow to close after being opened c. are slow to return to their open position after being closed d. are impossible to operate from a remote switch. b. are slow to close after being opened The pump whose rotor is mounted off-center is the: a. centrifugal pump b. rotary vane positive displacement pump c. rotary gear positive displacement pump d. centripetal pump b. rotary vane positive displacement pump When using a standard fog nozzle with Class A foams, little or no performance improvement has been shown in concentrations over: a. 0.5% b. 1.5% c. 1.0% d. 2.0% a. 0.5 % The purpose of the priming test is to: a. check the overall condition of the pump b. evaluate how quickly the priming device can create a vacuum to bring water through a pump to the discharge hose c. check that the given discharge information is accurate when the pump is in operation d. check for leaks in the system vacuum pressure, priming device, and pump b. evaluate how quickly the priming device can create a vacuum to bring water through a pump to the discharge hose The purpose of the gauge and flowmeter test is to: a. check the overall condition of the engine b. check that the given discharge information is accurate when the pump is in operation c. ensure that the fire apparatus is running at the same speed it was rated for when it was new d. measure whether pressure control devices can maintain certain discharge pressures under varying conditions b. check that the given discharge information is accurate when the pump is in operation A hose has a flow rate of 50 gpm with a friction loss of 2 psi. If the flow rate increases to 200 gpm, then the friction loss will increase to: a. 24 psi b. 8 psi c. 32 psi d. 16 psi c. 32 psi When an intake line is being charged with water, a relay pumper must have: a. a pilot valve to discharge water b. a bleeder valve to discharge air c. an in-line valve to discharge air d. a gate valve to discharge water b. a bleeder valve to discharge air Identify the true statement about centrifugal pumps. a. As flow increases, discharge pressure decreases; and as impeller speed decreases, discharge pressure increases b. As flow increases, discharge pressure decreases; and as impeller speed increases, discharge pressure increases c. As flow decreases, discharge pressure decreases; and as impeller speed increases, discharge pressure increases d. As flow decreases, discharge pressure increases; and as impeller speed increases, discharge pressure decreases b. As flow increases, discharge pressure decreases; and as impeller speed increases, discharge pressure increases Class B foams on hydrocarbons can be used in concentrations of up to: a. 12% b. 9% c. 3% d. 6% c. 3% Testing a flowmeter consists of: a. closing the discharge valve without changing the throttle setting b. disconnecting all preconnected hoselines and screwing all caps onto their discharges c. connecting a hoseline equipped with a solid stream nozzle to each discharge being tested d. closing all of the flowing valves one at a time c. connecting a hoseline equipped with a solid stream nozzle to each d