Pumper test| 159 questions| with complete solutions

water distribution systems OS&Y valves use what to control the valve. correct answer: threaded system principles of pressure say that pressure on an amount of water act on a surface in what way correct answer: perpendicular to the surface it acts on fog nozzles aerate what kinda foam correct answer: class A 2 ways to find discharge pressure with sprinklers correct answer: pre incident plan and dept connection plate how much energy is needed to raise 1 lb of water from 100 to 212 correct answer: 112 BTU in a relay at max distance what is the residual pressure between pumps correct answer: 20 psi pressure in which relay pumps achieve max flow correct answer: 150 psi what is used to control pumps accurately and control pressure in place correct answer: push pull handle main focus on a purchase acceptance test correct answer: bid specifications what determines how often you record oil and fuel records. correct answer: by jurisdiction when using a municipal water system what should you avoid when a private non portable water system is involved correct answer: backflow flow meters look like correct answer: spring and probe according to nfpa 1901 discharge pressure relief valves need to operate within what time correct answer: 10 sec after discharge and rise 30 psi percent of pressure drop needed for suction to occur in eductors correct answer: 30 distance between bottom of the concentrate container and the top correct answer: 6 ft fog nozzles do not work with correct answer: polar solvents amount of time it takes class A to lose its properties correct answer: 24 hours most common foam proportioner correct answer: around the pump most accurate foam proportioner correct answer: bypass balance pressure 4 way valves are used during correct answer: forward lays