Basic Actuating Systems, chapter 8, pages 8-1 through 8-23.
What unit transforms hydraulic
fluid pressure into mechanical
force, which performs work by
moving some mechanism?
An actuating unit
A cylinder unit
A control unit
A power unit
Naval aircraft use which of the
following types of actuating units?
Hydraulic motors only
Actuating cylinders only
Hydraulic motors and actuating
Aircraft actuating cylinders are
used when which of the following
mechanism movements are required?
Linear motion only
Reciprocating motion only
Linear or reciprocating motion
What is the most common type of
actuating cylinder used on naval
If hydraulic pressure is used to
move a single-acting actuating
cylinder in only one direction, all
EXCEPT which of the following
forces may be used to move it in
the opposite direction?
The operation of a single-acting,
actuating cylinder is normally
controlled by what component?
A directional control valve
A limiting switch
A priority valve
A sequence valve
In reference to a double-acting,
piston-type actuating cylinder,
which of the following statements
There are two pressure and two
The cylinder contains two
pistons and one rod
Fluid pressure can be applied
to either side of the piston
The stroke of the piston rod
travels in one direction only
piston-type actuating cylinder uses
a directional control valve capable
of directing fluid in what total
number of ways?
To prevent internal leakage from
one-side of the piston to the
other, double-acting, piston-type
actuating cylinders are equipped
with which of the following items?
Backup rings only
Backup rings and O-rings only
Backup rings, O-rings, and
metal scrapers only
Backup rings, O-rings, metal
scrapers, and felt wipers
IN ANSWERING QUESTION 9-10, REFER TO
FIGURE 8-3 IN THE TEXTBOOK.
When the cylinder is in the down
and locked position, the locking
ball bearings are held in the
locking position by what means?
A ball-lock plunger
A piston shaft
To equalize the displacement of
fluid on either side of the piston,
a double-action, finger-lock
actuator incorporates what
A piston spring
A balance shaft
An inner cylinder
An integral spring-loaded