Monday, August 11, 2014

FAA regulated questions part-1


  • The type of electric wire terminals used for most aircraft applications, in addition to providing good carrying capabilities, are designed primarily-- to prevent circuit failure due to terminal disconnection.
  • To test generator or motor armature windings for opens,--Place armature in a growler and connect a 110V test light on adjacent segments, light should lit.
  • What is the color & orientation of the position lights for navigation on civil airplanes?--Left side-red, Right side- green, Rear aft- white.
  • To what depth is the mica insulation between the commutator bars of a dc generator undercut?-- Equal to the width of the mica.
  • A voltage regulator controls generator output by-- Varying current flow to generator field coil.
  • Which type of dc generator is not used as an airplane generator?-- Series wound.
  • What is the most accurate type of frequency- measuring instrument?- Integrated circuit chip having a clock circuit.
  • During ground operation, aircraft generator cooling is usually accomplished by--An integral fan.
  • What does a rectifier do?- Changes AC into DC.
  • What type of instrument is used to measuring very high values of resistance?- Megohmmeter.
  • When a diode is checked for an open circuit or a short circuit, it should be-- Disconnected from the circuit.
  • When handling a high voltage capacitor in an electrical circuit, be sure it--Is fully discharged before removing it from the circuit.
  • Cause of Thermal-Runaway in a Ni-Cd battery-- Excessive current draw from the battery.
  • How can it be determined if a transfomer winding has some of its turns shorted together?--The transformer will get hot in normal operation.
  •  For general electrical use in aircraft, the acceptance method of attaching a terminal to a wire is by--Crimping.

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