Chapter 8 Pumping Apparatus Driver Operator Handbook (A+ Guaranteed)

The modern fire department pumper is equipped with a ____ as its main pump. correct answers Centrifugal pump Because they can pump air, _____ pumps are used as priming devices to get water into the centrifugal pumps during drafting operations. correct answers Positive displacement pumps ____ contain a piston that moves back and forth or up and down inside a cylinder. correct answers Piston pumps A _____ is a piston pump that can both receive and discharge water on each stroke of the piston. correct answers Double-acting piston pump The output capacity of a piston pump is determined by the ____ and the ____. correct answers Size of the cylinder and the speed of the piston travel. Multi-cylinder pumps are more flexible and efficient because _____. correct answers Some of the cylinders can be disengaged when the pump's full capacity is not needed. Piston pumps have not been used as the major fire pump in pumpers because in addition to problems with pulsating fire streams they are: correct answers very susceptible to wear _____ pumps are the simplest of all fire apparatus pumps from the standpoint of design. correct answers Rotary-type pumps the ___ pump consists of two gears that rotate in a tightly meshed pattern inside a water-tight case. correct answers Rotary gear The total amount of water that can be pumped by a rotary gear pump depends upon the: correct answers size of the pockets in the gears and the speed of rotation The rotary gear pump is a positive displacement pump because each pocket in the gears contains: correct answers a definite amount of water The ____ pump is constructed with movable elements that automatically compensate for wear and maintain a tighter fit with closer clearances as the pump is used. correct answers Rotary vane pump The self-adjusting feature makes the ____ pump much more efficient at pumping air than the standard rotary gear pump. correct answers Rotary vane pump The ____ pump is classified as a non-positive displacement pump because it does not pump a definite amount of water with each revolution. correct answers Centrifugal pump