IDIS 403 Ch 5 Questions with Detailed Verified
Answers
Fixed displacement pumps are rated by fluid flow and __ Ans: pressure rating
Hydraulic pumps include gear, vane, and __ pumps Ans: Piston
__ is a localized gaseous condition within a stream of fluid that occurs when pressure
is reduced to vapor pressure. Ans: Cavitation
A lobe pump requires __ to drive the lobe shaped driven gears. Ans: timing gears
__ is the volume of hydraulic fluid moved during each revolution of the shaft of a
pump. Ans: Displacement
A __ pump has an inner rotor that meshes with the gear teeth of an outer rotor. Ans:
gerotor
A variable-displacement pump varies the amount of hydraulic fluid with movable
internal components while the __ of the prime movers remain fixed. Ans: rpm
Bent-axis piston pumps are different from axial piston pumps because their __ are at
an angle (offset) Ans: pistons and piston block
A __ plate is an angled plate used to extend and retract the pistons in an axial piston
pump Ans: Swash
The main categories of hydraulic pumps are dynamic and __ pumps. Ans: positive
displacement
The most common method to vary the angle of a swash plate is through __. Ans:
internal pilot pressure
A __ is part of a vane pump and houses the vanes, rotor, and cam ring, which are all
placed between the two end plates. Ans: cartridge assembly
Answers
Fixed displacement pumps are rated by fluid flow and __ Ans: pressure rating
Hydraulic pumps include gear, vane, and __ pumps Ans: Piston
__ is a localized gaseous condition within a stream of fluid that occurs when pressure
is reduced to vapor pressure. Ans: Cavitation
A lobe pump requires __ to drive the lobe shaped driven gears. Ans: timing gears
__ is the volume of hydraulic fluid moved during each revolution of the shaft of a
pump. Ans: Displacement
A __ pump has an inner rotor that meshes with the gear teeth of an outer rotor. Ans:
gerotor
A variable-displacement pump varies the amount of hydraulic fluid with movable
internal components while the __ of the prime movers remain fixed. Ans: rpm
Bent-axis piston pumps are different from axial piston pumps because their __ are at
an angle (offset) Ans: pistons and piston block
A __ plate is an angled plate used to extend and retract the pistons in an axial piston
pump Ans: Swash
The main categories of hydraulic pumps are dynamic and __ pumps. Ans: positive
displacement
The most common method to vary the angle of a swash plate is through __. Ans:
internal pilot pressure
A __ is part of a vane pump and houses the vanes, rotor, and cam ring, which are all
placed between the two end plates. Ans: cartridge assembly
