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Vol 2 CDC
Unit 1,2,3,4,5 Review
101
Other
Not Applicable
02/11/2012
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Term
The maintenance stand with an adjustable height of 13 to 20 feet is the
 Definition
B–2.
Term
Of the following, the maintenance stand that is a scissor-type is the
 Definition
B–4.
Term
The type of jack normally used to change a tire on the aircraft is the
 Definition
axle
Term
The boiling point of liquid oxygen (LOX) is
 Definition
–297°F
Term
The low- and high-pressure capabilities, as measured in pounds per square inch gage (psig), of the NSU-L75 nitrogen-servicing unit are
 Definition
0–350; 350–3,600.
Term
The high-pressure pump provides a hydraulic filler pressurization unit with a maximum pressure of
 Definition
3,000 psi.
Term
The model 4000 engine trailer can support a maximum load of
 Definition
8,000 pounds.
Term
The usable pressure range, as measured in pounds per square inch (psi), of the MC–1A air compressor is
 Definition
0–3,200.
Term
The MC–2A air compressor is capable of delivering air at a maximum pressure, measured in pounds per square inch (psi), of
 Definition
200.
Term
The H–1 heater has an adjustable heat output that ranges from
 Definition
150°F to 280°F
Term
The stationary, skid-mounted power unit that produces aircraft electrical power for use in shops and hangars is the
 Definition
MD–4
Term
The unit capable of providing both alternating current (AC) and direct current (DC) electrical power in addition to pneumatic power for ground maintenance is the
 Definition
A/M32A–60.
Term
The hydraulic systems on the MK–3A–1 hydraulic test stand are designated
 Definition
primary and secondary.
Term
The amount of fluid the MJ–2A reservoir holds is
 Definition
27 gallons.
Term
A Class I MB–2 tractor weighs
 Definition
40,000 pounds.
Term
Unit 2
 Definition
Unit 2
Term
The structural members, whose chief use is to give shape to the aircraft and provide a means for attaching the skin to the structure, are called
 Definition
stringers
Term
The most common type of material used for fuselage construction is
 Definition
aluminum alloy.
Term
The wing components that provide strength and contour shape to the wing are the
 Definition
ribs.
Term
The main difference between inspection plates and panels is
 Definition
size.
Term
A cracked radome could cause
 Definition
microwave distortion.
Term
The reference locations, which are in the vertical direction measured from a reference datum that is usually well below the aircraft, are called
 Definition
waterlines.
Term
The category of –21 equipment used for life support and crew comfort is
 Definition
III.
Term
The effective range of a fully charged handheld fire extinguisher is
 Definition
20 feet.
Term
The first practical laminated composite formed was
 Definition
plywood.
Term
A barometer is designed to measure pressure in
 Definition
inches of mercury.
Term
Atmospheric pressure at sea level is
 Definition
14.7 pounds per square inch (psi).
Term
The force that acts parallel to the relative wind is
 Definition
drag.
Term
The axis that extends lengthwise through the fuselage from the nose to the tail is the
 Definition
longitudinal.
Term
The axis that extends crosswise from wing tip to wing tip is the
 Definition
lateral.
Term
Movement about the vertical axis is called
 Definition
yaw.
Term
The flight control located on the longitudinal control surface is the
 Definition
elevator.
Term
The type of flight control system that allows the pilot to control the aircraft if hydraulic pressure is lost is
 Definition
powered.
Term
When making a right turn, the relative position of the ailerons is the right aileron
 Definition
up, left aileron down
Term
The flight control surfaces used to make an aircraft climb or dive are
 Definition
elevators
Term
The type of flap normally incorporated on bomber and cargo type aircraft is
 Definition
fowler.
Term
Aircraft have trim systems to
 Definition
correct minor deviations in flight attitude
Term
The law that states, “the distortion of any elastic body is proportional to the distorting force” is known as
 Definition
Hook’s Law.
Term
When any force causes a solid to change permanently, the solid is said to have
 Definition
passed the elastic limit.
Term
The most outstanding characteristic of a liquid is its
 Definition
ability to conform to the shape of its container
Term
Pascal’s Law applies to
 Definition
confined fluids at rest
Term
Among the first to study the compressibility of gases was
 Definition
Boyle.
Term
The person who found that all gases expand and contract in direct proportion to the change in temperature, provided the pressure remains constant, was
 Definition
Charles.
Term
If 50 pounds per square inch (psi) of cylinder pressure acts on a 5-square-inch piston head, the resulting force will be
 Definition
250 pounds
Term
When an 8-square-inch piston moves 5 inches within a cylinder, the volume of liquid displaced will be
 Definition
40 cubic inches
Term
The principle, which states that as the velocity of a gas or liquid increases, pressure decreases, is
 Definition
Bernoulli’s.
Term
As fluid enters the narrow portion of a venturi,
 Definition
it accelerates
Term
When referring to hydraulic hand pumps, double-action means
 Definition
fluid-flow is created with each stroke of the pump handle
Term
Variable-volume pumps do not require a separate pressure-regulating device in the system because
 Definition
they have an integral compensator
Term
Cooler operation in a variable-volume hydraulic pump is provided by
 Definition
creep plates.
Term
In the Stratopower variable-volume pump, the pistons are held in contact with the cam plate by the
 Definition
nutating plate
Term
An accumulator’s piston is installed with the
 Definition
hollow end toward the air side of the accumulator
Term
The size of one micron is four
 Definition
millionths of an inch
Term
If a filter is rated at 10 microns nominal, it
 Definition
may allow some particles 10 microns or larger to get through
Term
Hydraulic manifolds are used in a hydraulic system to provide a location where the
 Definition
common fluid lines can come together
Term
The pneudraulic system component that uses a single-acting actuating cylinder is the
 Definition
brake assembly
Term
What pneudraulic system component uses a double-acting balanced actuating cylinder?
 Definition
Nosewheel steering
Term
Some aircraft manufactures use the term “power control cylinders” when referring to
 Definition
tandem actuators
Term
The pressure at which the relief valve ball is slightly unseated is called the
 Definition
cracking pressure
Term
The major advantage of the manual slide-type hydraulic selector valve is its
 Definition
metering ability.
Term
The difference between a selector valve and a servo valve is the
 Definition
servo valve will control fluid-flow
Term
The purpose of a hydraulic system check valve is to
 Definition
allow flow in only one direction.
Term
Another name for a flapper check valve is
 Definition
gate check valve.
Term
Allowing normal operating speed of a hydraulic actuator in one direction while limiting speed in the other direction is done by the
 Definition
restrictor check valve.
Term
The four major sections of a basic hydraulic system are
 Definition
supply, pressure, return, and auxiliary
Term
The basic units of a hydraulic hand pump system are the
 Definition
reservoir, pump, actuator, and manual shutoff valve.
Term
The reservoir supplies hydraulic fluid to a hand pump
 Definition
by gravity and the suction effect of the pump.
Term
relief valve is installed in a variable-volume hydraulic pump to
 Definition
compensate for pump pressure failure
Term
In most hydraulic subsystems, the actuating units are connected
 Definition
in parallel
Term
Unit 4
 Definition
Unit 4
Term
The shock strut component that controls the rate of fluid-flow through the orifice is the
 Definition
metering pin
Term
The purpose of the torsion links on a main landing gear is to
 Definition
prevent the inner cylinder from rotating within the outer cylinder
Term
The motion of the landing gear control lever is transmitted to the selector valve
 Definition
by a cable system
Term
Landing gear safety switches are actuated by
 Definition
torsion link
Term
The two most common types of shimmy dampers used in nose wheel steering are the
 Definition
piston and vane-type
Term
The purpose of aircraft brakes is to
 Definition
retard motion using friction
Term
The purpose of deboosters is to
 Definition
reduce braking pressure
Term
The two types of emergency brake systems are
 Definition
hydraulic and pneumatic
Term
The purpose of the antiskid system is to
 Definition
prevent wheel skid by releasing pressure from the skidding wheel
Term
Split wheels are balanced
 Definition
individually by halves
Term
An airtight seal is maintained between split wheel halves by use of
 Definition
an O-ring seal
Term
The type of bearings used on aircraft wheels is
 Definition
tapered roller
Term
The bearing cone of an aircraft wheel bearing is also called the
 Definition
inner race.
Term
The kinds of pitting that affect bearings are
 Definition
corrosive and mechanical
Term
The two types of brinelling are
 Definition
true brinelling and false brinelling
Term
An aircraft tire’s maximum recommended static load is called the
 Definition
ply rating
Term
The term “ply rating” refers to the
 Definition
index of tire casing strength
Term
For tires 24 inches or greater outside diameter, the tire shall be removed when wear reaches the bottom of any tread groove for a continuous length of
 Definition
12 inches.
Term
Matter is any substance that has mass and
 Definition
Occupies Space
Term
Electrons can be released from their outer orbit by all of the following forces except
 Definition
Cold
Term
The greater the current flow through an electromagnet, the
 Definition
Greater the Strength
Term
To determine the direction a current-carrying conductor will move in a magnetic field, you should use the
 Definition
left hand rule for the conductors
Term
Current that periodically reverses is called
 Definition
alternating
Term
The term used to express a condition in which two moving objects are changing in or out of step is
 Definition
phase
Term
The methods used to cool brushless alternating current (AC) generators are
 Definition
engine oil and blast air
Term
The underspeed switch (USS) on the 60/80 kilovolt ampere (KVA) generator constant speed drive (CSD) actuates at
 Definition
365HZ
Term
The internal component of a battery that is a grid or framework, which supports the active chemical materials, is the
 Definition
plate
Term
A 24-volt nickel-cadmium battery has
 Definition
19 cells
Term
The nickel-cadmium battery
 Definition
electrolyte will appear to be low when the cells are partially discharged
Term
The component designed to convert 115/220-volt alternating current (AC) power into 28-volts (or less) direct current (DC) to operate the aircraft DC system is the
 Definition
T- R transformer rectitifer
Term
When measuring resistance on a multimeter, the letters OL indicate
 Definition
infinity
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