8-23.
What type of hand pumps is used in
naval aircraft hydraulic systems?
Single-action
Simple-stroke
Double-action
Compound-stroke
IN ANSWERING QUESTION 8-24, REFER TO
FIGURE 7-13 IN THE TEXTBOOK.
8-24.
What action takes place when the
piston in the pump is moved to the
right?
1.
Check valve A opens; check
valve B closes; fluid enters
port C
2.
Check valve A closes; check
valve B opens; fluid exits
port D
3.
Check valve A opens; check
valve B closes; fluid exits
port D
4.
Check valve A closes; check
valve B closes; fluid exits
port D
8-25.
When air is in the emergency
hydraulic system and the handle of
the hand pump is moved to the
right, what handle reaction, if
any, will occur?
1.
It will creep slowly to the
left only
2.
It will creep slowly to the
left and then spring rapidly to
the right
3.
It will spring rapidly to the
left
4.
None
8-26.
A pump that delivers 3 gallons of
fluid per minute at a speed of
2,800 rpm, and continues to deliver
at that rate regardless of the
pressure in the system, is known as
what type of pump?
A variable displacement pump
A constant displacement pump
A rotary action pump
A gear-type pump
8-27.
The use of a variable displacement
pump in a hydraulic system
eliminates the need for what
component?
A reservoir
An accumulator
A hydraulic fuse
A pressure regulator
8-28.
8-29.
8-30.
8-31.
8-32.
8-33.
Gear-type pumps are usually driven
by what means?
A dc electric motor
An ac electric motor
An aircraft engine
A servo unit
A piston-type (constant
displacement) pump sucks fluid into
one port and forces it out the
other port.
This is known as what
type of piston motion?
1.
2.
3.
4.
To
Axial
Rotary
Reciprocating
Counterrotating
change the rotation of a piston-
type (constant displacement) pump,
you must perform which of the
following functions?
1.
Reverse the drive gears
2.
Reverse the universal link
3.
Rotate the valve plate 90
degrees
4.
Rotate the valve plate 180
degrees
The internal parts of a Stratopower
(variable displacement) pump
perform what four major functions?
1.
Hydraulic drive, flow control,
pressure regulation, and bypass
2.
Pressure control, mechanical
drive, bypass, and fluid
displacement
3.
Bypass, pressure regulation,
fluid displacement, and
hydraulic drive
4.
Pressure control, flow control,
mechanical drive, and pressure
regulation
A Stratopower pump has creep plates
installed for what purpose?
1.
To increase the angle of the
drive cam
2.
To decrease wear on the
revolving cam
3.
To provide a support for the
stationary bearing
4.
To ensure proper alignment of
the nutation plate
During operation of a Stratopower
pump in a nonflow condition,
lubrication is provided by what
means?
1.
A bypass system
2.
A bypass piston
3.
A compensator piston
4.
A compensator spring
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