FIRE APPARATUS ENGINEER FINAL
PAPER PRACTICE SOLUTION TESTED
QUESTIONS WITH COMPLETE ANSWERS
●● prime the pump
Answer: expel all air from a pump
●● cavitation
Answer: occurs when you attempt to flow water faster than it is being
supplied to the pump.
●● chassis
Answer: basic operating motor vehicle, including teh engine, frame and
other essential structural and mechanical parts
●● pipe plug
Answer: often used to clean out the silt and debris that may become
trapped in the water tank over time.
●● fire pump (fire apparatus)
Answer: provider of liquid flow and pressure dedicated to fire
protection.
,●● positive-displacement pump
Answer: produces a flow by capturing a specific volume of fluid per
pump revolution and reducing the fluid void by a mechanical means to
displace the pumping fluid. It traps a fixed amount of fluid and forces
that amount into the discharge stream during every revolution of the
pumping element. -rely on tightly fitting parts to function properly.
-rotary pumps exhibit a circular motion
-piston pumps have an up and down action
●● piston pumps
Answer: use a cylinder to contain the fluid; a piston then moves back
and forth inside the unit to move the liquid out of the cylinder.
-output of fluid is directly related to the cycles per minute of the piston
●● single-acting piston pump
Answer: one intake side and one discharge side, both of which are
located at the same ends of the cylinder. As the piston moves upward,
away from the intake side, it creates a vacuum in the cylinder. This
vacuum causes the intake valve to open and fill the cylinder with water.
At the same time, at the discharge side of the pump, the discharge valve
remains in the closed position. Once the piston moves in the opposite
direction, the intake valve closes and the discharge valve opens to expel
water
●● double-acting piston pump
, Answer: allows water to flow more continuously than a single-acting
piston pump. Instead of having only one intake valve and discharge
valve at one end of the cylinder, however, a double-acting piston pump
has beth valves at each end. clinder fills with water on both the up and
down strokes of the piston
●● rotary pumps
Answer: typically used as the priming pump for a centrifugal pump.
Operate in a cicular motion and discharge a constant flow of water with
each revolution. As the pumping elements rotate, they reduce the area in
which the fluid is contained, which in turn forces the water out of the
pump.
●● pumping element
Answer: such as a gear or vane encased in the pump casing, rotates,
expanding the volume inside to allow water to enter the pump.
●● rotary gear pump
Answer: positive-displacement pump that uses two gears encased inside
a pump casing to move water under pressure
●● rotary vane pump
Answer: positive-displacement pump characterized by the use of a single
rotor with vanes that move with pump rotation to create a void a void
and displace liquid
PAPER PRACTICE SOLUTION TESTED
QUESTIONS WITH COMPLETE ANSWERS
●● prime the pump
Answer: expel all air from a pump
●● cavitation
Answer: occurs when you attempt to flow water faster than it is being
supplied to the pump.
●● chassis
Answer: basic operating motor vehicle, including teh engine, frame and
other essential structural and mechanical parts
●● pipe plug
Answer: often used to clean out the silt and debris that may become
trapped in the water tank over time.
●● fire pump (fire apparatus)
Answer: provider of liquid flow and pressure dedicated to fire
protection.
,●● positive-displacement pump
Answer: produces a flow by capturing a specific volume of fluid per
pump revolution and reducing the fluid void by a mechanical means to
displace the pumping fluid. It traps a fixed amount of fluid and forces
that amount into the discharge stream during every revolution of the
pumping element. -rely on tightly fitting parts to function properly.
-rotary pumps exhibit a circular motion
-piston pumps have an up and down action
●● piston pumps
Answer: use a cylinder to contain the fluid; a piston then moves back
and forth inside the unit to move the liquid out of the cylinder.
-output of fluid is directly related to the cycles per minute of the piston
●● single-acting piston pump
Answer: one intake side and one discharge side, both of which are
located at the same ends of the cylinder. As the piston moves upward,
away from the intake side, it creates a vacuum in the cylinder. This
vacuum causes the intake valve to open and fill the cylinder with water.
At the same time, at the discharge side of the pump, the discharge valve
remains in the closed position. Once the piston moves in the opposite
direction, the intake valve closes and the discharge valve opens to expel
water
●● double-acting piston pump
, Answer: allows water to flow more continuously than a single-acting
piston pump. Instead of having only one intake valve and discharge
valve at one end of the cylinder, however, a double-acting piston pump
has beth valves at each end. clinder fills with water on both the up and
down strokes of the piston
●● rotary pumps
Answer: typically used as the priming pump for a centrifugal pump.
Operate in a cicular motion and discharge a constant flow of water with
each revolution. As the pumping elements rotate, they reduce the area in
which the fluid is contained, which in turn forces the water out of the
pump.
●● pumping element
Answer: such as a gear or vane encased in the pump casing, rotates,
expanding the volume inside to allow water to enter the pump.
●● rotary gear pump
Answer: positive-displacement pump that uses two gears encased inside
a pump casing to move water under pressure
●● rotary vane pump
Answer: positive-displacement pump characterized by the use of a single
rotor with vanes that move with pump rotation to create a void a void
and displace liquid
