Aerospace Ground Equipment Vol. 3

100 Questions | Total Attempts: 1074

SettingsSettingsSettings
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

Back to Top Back to top