Eoc2 Aircraft
.
- 1.
The basic units of a hydraulic hand pump system are
- A.
Pump, actuator, filter, priority valve
- B.
Pump, acuator, shutoff, and metering valve
- C.
Reservoir, pump, actuator, and metering valve
- D.
Reservoir, pump, actuator, and manual shutoff valve
Correct Answer
D. Reservoir, pump, actuator, and manual shutoff valve -
- 2.
The reservoir supplies hydraulic fluid to a hand pump
- A.
By delievery priority
- B.
By the suction effect of the pump
- C.
By gravity and the suction effect of the pump
- D.
In response to pressure demand and suction effect of the pump
Correct Answer
C. By gravity and the suction effect of the pump -
- 3.
A relief valve is installed in a variable-volume hydraulic pump to
- A.
Bypass a blocked valve
- B.
Compensate for pump pressure failure
- C.
Relieve pressure if the pump compensator fails
- D.
Relieve pressure when the foot valve is blocked
Correct Answer
C. Relieve pressure if the pump compensator fails -
- 4.
In most hydraulic subsystems, the actuating units are connected
- A.
Intersectionally
- B.
In sequence
- C.
In parallel
- D.
Linearly
Correct Answer
C. In parallel -
- 5.
The shock strut component that controls the rate of fluid-flow through the orifice is the
- A.
Check valve
- B.
Bypass valve
- C.
Metering pin
- D.
Flow transmitter
Correct Answer
C. Metering pin -
- 6.
The purpose of the torsion links on a main landing gear is to
- A.
Reduce oscillation during extension
- B.
Reduce oscillation during retraction
- C.
Allow the inner cylinder to rotate within the outer cylinder
- D.
Prevent the inner cylinder from rotating with the outer cylinder
Correct Answer
D. Prevent the inner cylinder from rotating with the outer cylinder -
- 7.
The motion of the lading gear control lever is transmitted to the selector valve
- A.
Electrically
- B.
By push-pull rod
- C.
By a cable system
- D.
Through hydraulic pressure
Correct Answer
C. By a cable system -
- 8.
Landing gear safety switched are actuated by
- A.
Control cams
- B.
Shock struts
- C.
Torsion links
- D.
Control linkage
Correct Answer
C. Torsion links -
- 9.
The two most common types of shimmy dampers use in nose wheel steering are the
- A.
Vane and servo
- B.
Vane and spline
- C.
Piston and valve
- D.
Piston and servo
Correct Answer
C. Piston and valve -
- 10.
The purpose of aircraft brakes is to
- A.
Reduce takeoff roll
- B.
Reduce wheel skidding
- C.
Retard motion using rotation
- D.
Retard motion by using friction
Correct Answer
D. Retard motion by using friction -
- 11.
The purpose of deboosters is to
- A.
Decrease fluid volume
- B.
Reduce braking pressure
- C.
Enlarge running clearance
- D.
Increase braking pressure
Correct Answer
B. Reduce braking pressure -
- 12.
The two typers of emergency brake systems are
- A.
Electric and manual
- B.
Hydraulic and electric
- C.
Manual and pneumatic
- D.
Hydraulic and pneumatic
Correct Answer
D. Hydraulic and pneumatic -
- 13.
The purpose of the anti-skid system is to
- A.
Reduce friction between wheel and tire
- B.
Increase friction between wheel and tire
- C.
Prevent wheel skid by applying pressure to the skidding wheel
- D.
Prevent wheel skid by releasing pressure from the skidding wheel
Correct Answer
D. Prevent wheel skid by releasing pressure from the skidding wheel -
- 14.
Split wheels are balanced
- A.
During build-up
- B.
As an assembly
- C.
Individually by halves
- D.
By a self-balancing system
Correct Answer
C. Individually by halves -
- 15.
An airtight seal is maintained between split wheel halves by use of
- A.
A rubber liner
- B.
An O-ring seal
- C.
A phenolic ring
- D.
Machine-mated surfaces
Correct Answer
B. An O-ring seal -
- 16.
The type of bearings used on aircraft wheels is
- A.
Flat roller
- B.
Straight ball
- C.
Recessed cone
- D.
Tapered roller
Correct Answer
D. Tapered roller -
- 17.
The bearing cone of an aircraft wheel bearing is also called the
- A.
Outer race
- B.
Inner race
- C.
Bearing cup
- D.
Roller mount
Correct Answer
B. Inner race -
- 18.
The kinds of pitting that affect bearings are
- A.
Segmented and peel
- B.
Corrosive and segmented
- C.
Corrosive and mechanical
- D.
Mechanincal and segmented
Correct Answer
C. Corrosive and mechanical -
- 19.
The two types of brinelling are
- A.
True and false
- B.
Active and passive
- C.
Neutral and natural
- D.
Negative and positive
Correct Answer
A. True and false -
- 20.
An aircraft tire's maximum recommended static load is called the
- A.
Ply rating
- B.
Serial number
- C.
Service rating
- D.
Manufactured wear limit
Correct Answer
A. Ply rating -
- 21.
The term "ply rating" refers to the
- A.
Maximum allowable tire speed
- B.
Number of reinforcment cords
- C.
Number of cord plies in a tire
- D.
Index of tire casing strength
Correct Answer
D. Index of tire casing strength -
- 22.
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
- A.
4 inches
- B.
6 inches
- C.
12 inches
- D.
16 inches
Correct Answer
C. 12 inches -
- 23.
Matter is any substance that has mass and
- A.
Can be seen
- B.
Occupies space
- C.
Has constant volume
- D.
Cannot be compressed
Correct Answer
B. Occupies space -
- 24.
Atoms are made up of
- A.
Molecules, protons, neutrons
- B.
Protons, molecules, electrons
- C.
Molecules, neutrons, electrons
- D.
Protons, neutrons, and electrons
Correct Answer
D. Protons, neutrons, and electrons -
- 25.
Electrons can be released from their outer orbit by all of the following forces except
- A.
Heat
- B.
Cold
- C.
Chemical action
- D.
Changing magnetic field
Correct Answer
B. Cold -
- 26.
The greater the current flow through an electromagnet, the
- A.
Less the strength
- B.
Greater the strength
- C.
Greater the retentivity
- D.
Higher the reluctance of the core
Correct Answer
B. Greater the strength -
- 27.
To determine the direction of a current-carrying conductor will move in a magnetic field, you should use the
- A.
Left-hand rule for coils
- B.
Right-hand rule for coils
- C.
Left-hand rule for conductors
- D.
Right-hand rule for conductors
Correct Answer
C. Left-hand rule for conductors -
- 28.
Current that periodically reverses is called
- A.
Potential
- B.
Reversing
- C.
Alternating
- D.
Directional
Correct Answer
C. Alternating -
- 29.
The term used to express a condition in which two moving objects are changing in or out of step is
- A.
Phase
- B.
Shunt
- C.
Current
- D.
Sine wave
Correct Answer
A. Phase -
- 30.
The methods used to cool brushless alternating current (AC) generators are
- A.
Blast air and ram air
- B.
Engine oil and blast air
- C.
Blast air and generator oil
- D.
Generator oil and engine oil
Correct Answer
B. Engine oil and blast air -
- 31.
The underspeed switch (USS) on the 60/80 kilovolt ampere (KVA) generator constant speed drive (CSD) actuates at
- A.
325 Hz
- B.
345 Hz
- C.
365 Hz
- D.
395 Hz
Correct Answer
C. 365 Hz -
- 32.
The internal component of a battery that is a grid or framework, which supports the active chemical materials, is the
- A.
Plate
- B.
Separator
- C.
Electrolyte
- D.
Chemical solutions
Correct Answer
A. Plate -
- 33.
A 24-volt-nickel-cadmium battery has
- A.
12 cells
- B.
19 cells
- C.
20 cells
- D.
24 cells
Correct Answer
B. 19 cells -
- 34.
The nickel-cadmium battery
- A.
Cells are not replacable
- B.
Is not subject to thermal runaway
- C.
Service life is short and it is subject to thermal runaway
- D.
Electrolyte will appear to be low when the cells are partially discharged
Correct Answer
D. Electrolyte will appear to be low when the cells are partially discharged -
- 35.
The component designed to convert 115/220-volt alternating curret (AC) power into 28-volts (or less) direct current (DC) to operate the aircraft DC system is the
- A.
Intergrated drive generator (IDG)
- B.
Frequency and load controller
- C.
Generator control unit (GCU)
- D.
Transformer-rectifier (T-R)
Correct Answer
D. Transformer-rectifier (T-R) -
- 36.
When measuring resistance on a multimeter, the letters OL indicate
- A.
Error
- B.
Infinity
- C.
Off load
- D.
Ohms low
Correct Answer
B. Infinity -
- 37.
It is important to raise the air temperature in a jet engine to
- A.
Increase its energy
- B.
Decrease its energy
- C.
Decrease its volume
- D.
Increases its efficiency
Correct Answer
A. Increase its energy -
- 38.
In a jet engine, the velocity of the air is decreased by the
- A.
Diffuser
- B.
Afterburner
- C.
Compressor
- D.
Turbine blade
Correct Answer
A. Diffuser -
- 39.
An aircraft taxiing at a constant speed is an example of
- A.
Bernoulli's law
- B.
Newton's first law of motion
- C.
Newton's second law of motion
- D.
Newton's third law of motion
Correct Answer
B. Newton's first law of motion -
- 40.
Foot-pounds and inch-pounds are units of measure for
- A.
Work
- B.
Power
- C.
Inertia
- D.
Friction
Correct Answer
A. Work -
- 41.
The resistance of an object to change its motion is a property of matter called
- A.
Energy
- B.
Inertia
- C.
Friction
- D.
Potential
Correct Answer
B. Inertia -
- 42.
The ability to do work is the definition of
- A.
Energy
- B.
Inertia
- C.
Friction
- D.
Velocity
Correct Answer
A. Energy -
- 43.
In a jet engine, fuel is metered for combustion by the
- A.
Pressurizing and dump (P&D) valve
- B.
Fuel nozzle
- C.
Fuel control
- D.
Fuel pump
Correct Answer
C. Fuel control -
- 44.
The average percentage of a jet engine's energy required to maintain engine operation is
- A.
50
- B.
60
- C.
70
- D.
80
Correct Answer
B. 60 -
- 45.
What effect does the divergent design of a jet engine diffuser have on pressure?
- A.
Increases pressure
- B.
Decreases pressure
- C.
Results in pressre fluctuation
- D.
Has no effect on pressure
Correct Answer
A. Increases pressure -
- 46.
The required velocity for air and gases flowing through a jet engine is
- A.
Slow velocity at all times
- B.
Less velocity exiting than entering
- C.
Equal velocity entering and exiting
- D.
Greater velocity exiting than entering
Correct Answer
D. Greater velocity exiting than entering -
- 47.
The velocity of the stream of air that flows through a jet engine reaches its highest point at the
- A.
Turbine stator (nozzle diaphragm)
- B.
Turbine exhaust cone
- C.
Combustion section
- D.
Ejector nozzle
Correct Answer
D. Ejector nozzle -
- 48.
When two or more turbine wheels are used in a jet engine, what is placed directly in front of each turbine wheel?
- A.
Diffuser
- B.
Jet nozzle
- C.
Combustion liner
- D.
Nozzle diaphragm
Correct Answer
D. Nozzle diaphragm -
- 49.
A jet engine derives its names from the fact that
- A.
Its in effect a turbo super charger
- B.
The nozzles within the engine are called jets
- C.
It uses a turbine-type compressor to maintain power
- D.
It uses a exhaust-gas-driven turbine wheel to drive its compressor
Correct Answer
D. It uses a exhaust-gas-driven turbine wheel to drive its compressor -
- 50.
The three major sections of all jet engines are compressor, combustion, and
- A.
Turbo
- B.
Turbine
- C.
Exhaust
- D.
Diffuser
Correct Answer
B. Turbine -
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Jan 19, 2017Quiz Edited by
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Nov 30, 2010Quiz Created by
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