Aerospace Ground Equipment Vol. 3

100 Questions | By Cwonder | Last updated: Mar 21, 2022 | Total Attempts: 1074

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Aerospace Ground Equipment Quizzes & Trivia

Updated CDC's. . . Version 5. Covers all Unit review exercises

Questions and Answers

1.

To change electrical energy to mechanical energy is the purpose of a
- A.
  
  Generator
- B.
  
  Converter
- C.
  
  Inverter
- D.
  
  Motor
2.

Electrical contact between the stationary and rotating parts of a motor is the function of the
- A.
  
  Field windings
- B.
  
  Commutator
- C.
  
  Bearings
- D.
  
  Brushes
3.

Torque is defined as
- A.
  
  Wattage
- B.
  
  Horsepower
- C.
  
  Rotational force
- D.
  
  Opposition to applied voltage
4.

In a series-wound dierect current (DC) motor, speed is dependent on the
- A.
  
  Load
- B.
  
  Torque
- C.
  
  Armature
- D.
  
  Field winding
5.

The relationship between slip and torque can best be described as more
- A.
  
  Torque causing slip
- B.
  
  Slip causing more torque
- C.
  
  Torque causing less slip
- D.
  
  Slip causing less torque
6.

The three-phase induction motor does not require
- A.
  
  Slip
- B.
  
  A rotor
- C.
  
  A stator
- D.
  
  A starting device
7.

To reverse the direction of rotation of a three-phase inductive motor, you must reserve
- A.
  
  All three phases
- B.
  
  Any two power leads
- C.
  
  A and B phases only
- D.
  
  B and C phases only
8.

The stator windings of a synchronous motor are spaced
- A.
  
  20 degrees apart
- B.
  
  30 degrees apart
- C.
  
  90 degrees apart
- D.
  
  120 degrees apart
9.

The rotation speed of a sychronous motor is controlled by the
- A.
  
  Load
- B.
  
  Torque
- C.
  
  Input frequency
- D.
  
  Armature current
10.

During an inspection of a direct current (DC) motor, check the brushes for
- A.
  
  Pitting
- B.
  
  Seating
- C.
  
  Coloration
- D.
  
  Brittleness
11.

When you check the concentricity of a commutator or slip rings, look for
- A.
  
  Wear
- B.
  
  Pitting
- C.
  
  Roundness
- D.
  
  Overheating
12.

When using a troubleshooting chart, what are you not likely to find?
- A.
  
  Analysis
- B.
  
  Rememdies
- C.
  
  Symptoms
- D.
  
  Probable causes
13.

Most troubleshooting on a motor can be done using a
- A.
  
  Megger
- B.
  
  Growler
- C.
  
  Multimeter
- D.
  
  Clamp-on ammeter
14.

Perform an operational check of the unit
- A.
  
  At the last minute
- B.
  
  With the defective part removed
- C.
  
  Before final reassembly of the enclosure
- D.
  
  As soon as you replace the defective part
15.

The component most likely to be damaged by poorly filtered fuel is the
- A.
  
  Combustion chamber
- B.
  
  Transfer pump
- C.
  
  Fuel lines
- D.
  
  Injectors
16.

The type of injector that is operated by a rocker arm is
- A.
  
  Spray
- B.
  
  Pintle
- C.
  
  Pressure
- D.
  
  Mechanical
17.

Aside from idle speed, the limiting speed governor through the use of flyweights and spring tension controls
- A.
  
  Load speed
- B.
  
  Minimum speed
- C.
  
  Maximum speed
- D.
  
  Intermediate speed
18.

A lubricant performs which function when it deposits particles of dirt in the oil sump?
- A.
  
  Cooling
- B.
  
  Sealing
- C.
  
  Cleaning
- D.
  
  Reducing friction
19.

What component holds a large amount of coolant in close contact with a large volume of air?
- A.
  
  Radiator cap
- B.
  
  Thermostat
- C.
  
  Water pump
- D.
  
  Radiator
20.

Which liquid cooling system component circulates the coolant?
- A.
  
  Vacuum valve
- B.
  
  Water pump
- C.
  
  Cooling fan
- D.
  
  Radiator
21.

One of the impellers within a blower on a diesel engine is normally driven
- A.
  
  By the engine electrical system through a DC motor
- B.
  
  By the engine exhaust gases flowing across the turbine wheel
- C.
  
  From the engine crankshaft through a system of gears or a silent chain
- D.
  
  Through a solid shaft connected between the blower and the transmission
22.

What must be accomplished to supercharge a diesel engine?
- A.
  
  Change the overlap and timing so that the intake and exhaust valves are not open at the same time
- B.
  
  Change the overlap and timing so that the intake and exhaust valves are open at the same time
- C.
  
  Advance exhaust valve opening time
- D.
  
  Retard intake valve opening time
23.

The filtration step protects the diesel engine fuel system from
- A.
  
  Blockage of airflow
- B.
  
  Lube system malfunctions
- C.
  
  Slipping belts on the blower
- D.
  
  Abrasion by foreign particles
24.

The best step in preventing abnormal amounts of carbon, moisture, and sludge buildup in a diesel engine, is to
- A.
  
  Avoid operating the engine for extended periods at no-load
- B.
  
  Operate the unit at idle speed for long periods of time
- C.
  
  Drain moisture from fuel system periodically
- D.
  
  Perform a preoperational check
25.

When performing a compression test, measuring pounds per square inch (psi), the maximum allowable deviation between cylinders is
- A.
  
  25 psi
- B.
  
  50 psi
- C.
  
  75 psi
- D.
  
  100 psi