Hydraulics and Pneumatics Final PASSED Exam Questions and CORRECT Answers
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Course
Hydraulics and Pneumatics
Institution
Hydraulics And Pneumatics
Hydraulics and Pneumatics Final PASSED
Exam Questions and CORRECT Answers
Absolute pressure can be used in systems that have vacuums to avoid using a negative
number. (T/F) - CORRECT ANSWER- True
Changing the angle of the swash plate in a variable-displacement piston pump does not affect
the...
Hydraulics and Pneumatics Final PASSED
Exam Questions and CORRECT Answers
Absolute pressure can be used in systems that have vacuums to avoid using a negative
number. (T/F) - CORRECT ANSWER- True
Changing the angle of the swash plate in a variable-displacement piston pump does not affect
the distance of how far back a piston pulls. (T/F) - CORRECT ANSWER- False
Bleed-off systems are used when more flow control accuracy and less system efficiency is
required. (T/F) - CORRECT ANSWER- False
Piston speed is not affected by the amount that an orifice in a flow control valve is open to
allow fluid flow. (T/F) - CORRECT ANSWER- False
Needle valves can have built-in check valves for applications that require fluid flow in the
opposite direction of the needle valve's metered flow. (T/F) - CORRECT ANSWER- True
A turnbuckle's fittings are commonly two eyebolts, though they may also be any combination
of eyebolts, hooks, or pinned jaws. (T/F) - CORRECT ANSWER- True
A static seal is used between moving parts to prevent leaks or contamination. (T/F) -
CORRECT ANSWER- False
Cup seals include v-ring and u-ring seals. (T/F) - CORRECT ANSWER- True
With counterbalance valves, the pressure created in the cylinder by the weight of the load
cannot travel through the valve and back the reservoir until it overcomes the biasing spring
force. (T/F) - CORRECT ANSWER- True
Hydraulic fluid in a drain lines returns to the reservoir under little to no pressure. (T/F) -
CORRECT ANSWER- True
, Nominal-rated filters with surface-type elements are 50-75% efficient. (T/F) - CORRECT
ANSWER- True
Most bypass filters are color-coded to indicate three different filter conditions. (T/F) -
CORRECT ANSWER- True
A pressure switch is either located between the air compressor and the receiver or is attached
directly to the receiver. (T/F) - CORRECT ANSWER- True
Centrifugal air compressors are high-pressure, low-flow air compressors. (T/F) - CORRECT
ANSWER- False
Rotary-screw air compressors with two intermeshing screw shafts are the most common type
of rotary-screw air compressor. (T/F) - CORRECT ANSWER- True
_____ energy is the energy of motion. - CORRECT ANSWER- Kinetic
A _____ valve protects a fluid power system from over pressure by setting a maximum
operating pressure. - CORRECT ANSWER- Relief
A _____ is a line or mark printed on a hose that indicates if a hydraulic hose has been
improperly twisted after installation. - CORRECT ANSWER- Layline
Hydraulic pump types include: _____, _____, and _____ pumps. - CORRECT ANSWER-
Gear, vane, and piston
A _____ pump has an inner rotor that meshes with the gear teeth of an outer rotor. -
CORRECT ANSWER- Gerotor
A _____ plate is an angled plate used to extend and retract the pistons in an axial piston
pump. - CORRECT ANSWER- Swash
The main categories of hydraulic pumps are: _____ and _____ pumps. - CORRECT
ANSWER- Dynamic and positive-displacement
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