2a553c CDC Volume 2 Ure

124 Questions | Total Attempts: 94

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CDC Quizzes & Trivia

Questions and Answers
  • 1. 
    Which of the following is not looked for during a visual preventative maintenance inspection?
    • A. 

      Fungus growth.

    • B. 

      Corroded connectors.

    • C. 

      Sand and grit deposits.

    • D. 

      Voltages within tolerances.

  • 2. 
    What type of damage softens the protective conformal coatings on circuit boards and components?
    • A. 

      Electrostatic discharge (ESD).

    • B. 

      Solvent.

    • C. 

      Abrasion.

    • D. 

      Solvent entrapment.

  • 3. 
    What lubricant is available in an aerosol and used for light to moderate loads?
    • A. 

      Silicone.

    • B. 

      General-purpose grease.

    • C. 

      General-purpose lubricating oil.

    • D. 

      High-temperature lubricating oil.

  • 4. 
    The composite tool kit (CTK) program was developed to
    • A. 

      Reduce tool costs through the use of chits.

    • B. 

      Make end-of-shift tool inspections more efficient.

    • C. 

      Eliminate damage to aircraft and to control aircraft costs.

    • D. 

      Eliminate damage to aircraft, equipment, and to control tool assets.

  • 5. 
    Which method of tool layout prevents a quick, accurate inventory of a composite tool kit (CTK)?
    • A. 

      Foam cutouts in a tool tray.

    • B. 

      Tools set loosely in a drawer.

    • C. 

      Contrasting foam depressions.

    • D. 

      Tools hung on a shadow board.

  • 6. 
    How are small tools, which cannot be marked, controlled in a composite tool kit (CTK)?
    • A. 

      In a way determined by the wing commander.

    • B. 

      Tools that cannot be marked will not be placed in CTKs.

    • C. 

      Create a designated position in the CTK for the item and listing it on an inventory.

    • D. 

      In a container marked with the identification number and number of tools contained within.

  • 7. 
    What helps to dissipate and lessen the effects of electrostatic discharges?
    • A. 

      Using nonconducting packaging materials.

    • B. 

      Using proper insulating materials.

    • C. 

      Dehumidified air.

    • D. 

      Humid air.

  • 8. 
    At what voltage level can electrostatic discharges (ESD) not be seen, felt, or heard?
    • A. 

      15,000.

    • B. 

      9,000.

    • C. 

      6,000.

    • D. 

      4,000.

  • 9. 
     What material is designed to prevent the generation of a static charge, but is not a static shield?
    • A. 

      Antistatic.

    • B. 

      Conductive.

    • C. 

      Nonconductive.

    • D. 

      Static dissipative.

  • 10. 
    What precaution must you take first before installing an electrostatic discharge (ESD) line replaceable unit (LRU)?
    • A. 

      Remove protective caps or covers.

    • B. 

      Touch the LRU case with your hands.

    • C. 

      Ensure the aircraft is properly grounded.

    • D. 

      Touch the ends of aircraft wiring to the LRU case.

  • 11. 
    Shielded cable consists of
    • A. 

      A metallic braid over the insulation.

    • B. 

      A metal conductor covered with a dielectric.

    • C. 

      An inner conductor separated by an insulation dielectric.

    • D. 

      A compact wire bundle with self-contained wire assemblies.

  • 12. 
    Which type of cable is used to carry radio frequency (RF) power from one point to another?
    • A. 

      Electromagnetic pulse (EMP).

    • B. 

      Insulated wire.

    • C. 

      Shielded.

    • D. 

      Coaxial.

  • 13. 
    What type of cable is required for greater shielding against electromagnetic interference?
    • A. 

      Twisted pair.

    • B. 

      Coaxial.

    • C. 

      Triaxial.

    • D. 

      Shielded.

  • 14. 
    What advantage of fiber optic cable allows for a greatly increased information-carrying capacity within a single fiber?
    • A. 

      Smaller size.

    • B. 

      Wider bandwidth.

    • C. 

      Lower signal attenuation.

    • D. 

      Immunity to electromagnetic interference.

  • 15. 
     In a fiber optic cable, what effect does increasing the frequency of a signal have on signal attenuation?
    • A. 

      None.

    • B. 

      Attenuation always increases.

    • C. 

      Attenuation always decreases.

    • D. 

      Attenuation increases or decreases depending on frequency.

  • 16. 
    What component of a fiber optic communication system changes electrical energy in the form of a current into optical energy (light)?
    • A. 

      Source.

    • B. 

      Emitter.

    • C. 

      Detector.

    • D. 

      Converter.

  • 17. 
    What transmitter device changes electrical signals into light signals?
    • A. 

      Zener diode.

    • B. 

      Pin photodiode.

    • C. 

      Injection laser diode.

    • D. 

      Avalanche photodiode

  • 18. 
    Which receiver device produces current in response to incident light?
    • A. 

      Zener diode.

    • B. 

      Pin photodiode.

    • C. 

      Injection laser diode.

    • D. 

      Light emitting diode.

  • 19. 
    What is the reflective surface that propagates light along the optical transmission path?
    • A. 

      Core.

    • B. 

      Buffer.

    • C. 

      Cladding.

    • D. 

      Shielding.

  • 20. 
    When wavelength equals rate of travel/frequency, the wavelength for a sine wave with a frequency of 2MHz is
    • A. 

      100 meters.

    • B. 

      150 meters.

    • C. 

      300 meters.

    • D. 

      450 meters.

  • 21. 
    A transmission line with a simple construction, high radiation loss, and high noise pickup describes
    • A. 

      A shielded line.

    • B. 

      An air coaxial line.

    • C. 

      A flexible coaxial line.

    • D. 

      A parallel two-wire open line.

  • 22. 
     How do you ensure that a coaxial cable transmission line is outputting maximum signal strength?
    • A. 

      Check the standing-wave-ratio of the cable.

    • B. 

      Check for an open between the inner and outer conductors.

    • C. 

      Check for an open outer conductor between the connectors on each end of the cable.

    • D. 

      Check for a shorted outer conductor between the connectors on each end of the cable.

  • 23. 
    What type of loss occurs as a result of electrical current flowing through a conductor?
    • A. 

      Copper.

    • B. 

      Radiation.

    • C. 

      Induction.

    • D. 

      Dielectric.

  • 24. 
    When performing electrical measurements of radio frequency (RF) lines, which of the following will not load the line and upset its normal characteristics?
    • A. 

      An ammeter.

    • B. 

      A voltmeter.

    • C. 

      A neon bulb.

    • D. 

      A slotted line section.

  • 25. 
    The disadvantage of using a wave guide is its
    • A. 

      High power loss.

    • B. 

      Size restrictions.

    • C. 

      Low power handling capability.

    • D. 

      Use is limited to low frequencies.

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