Recip Inspections 1.txt

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Recip Inspections 1.txt
2013-06-06 14:57:28
recip inspections overhaul roberts

Engine Instrument Systems
Show Answers:

  1. Which unit most accurately indicates fuel consumption of a reciprocating engine?
    Fuel Flowmeter.
  2. The fuel flowmeter used with a continuous-fuel injection system installed on an aircraft horizontally opposed reciprocating engines measures the fuel pressure drop across the
    Fuel Nozzles
  3. The principal fault in the pressure type fuel flowmeter indicating system, installed on a horizontally opposed continuous-flow fuel injected aircraft reciprocating engine, is that a plugged fuel injection nozzle will cause a
    Higher than normal fuel flow indication.
  4. On a twin-engine aircraft with fuel-injected reciprocating engines, one fuel-flow indicator reads considerably higher than the other in all engine operating configurations. What is the probable cause of this indication?
    One or more fuel nozzles clogged.
  5. The fuel-flow indication system used with many fuel-injected opposed engine airplanes utilizes a measure of
    Fuel Pressure
  6. In addition to fuel quantity, a computerized fuel system (CFS) with a totalizer-indicator provides indication of?
    • Fuel flow rate,
    • fuel used since reset or initial start-up,
    • fuel time remaining at current power setting

  7. In an aircraft equipped with a pressure-drop type fuel-flow indicating system, if one of the injector nozzles becomes restricted, this would cause a decrease in fuel flow with
    An increased fuel flow indication on the gauge.
  8. A manifold pressure gauge is designed to
    Indicate absolute pressure in the intake manifold.
  9. The purpose of an exhaust gas analyzer is to indicate the
    Fuel/air ratio being burned in the cylinders.
  10. Which of the following types of electric motors are commonly used in electric tachometers?
    Sychronous Motors
  11. Where are the hot and cold junctions located in an engine cylinder temperature indicating system?
    The hot junction is located at the cylinder and the cold junction is located at the instrument.
  12. Basically, the indicator of a tachometer system is responsive to change in
  13. Which statement is correct concerning a thermocouple-type temperature indicating instrument system?
    It requires no external power source.
  14. Which statement is true regarding a thermocouple-type cylinder head temperature measuring system?
    The voltage output of the thermocouple system is determined by the temperature difference between the two ends of the thermocouple.
  15. What basic meter is used to indicate cylinder head temperature in most aircraft?
  16. Which of the following is a primary engine instrument?
  17. A complete break in the line between the manifold pressure gauge and the induction system will be indicated by the gauge registering
    Prevailing Atmospheric Pressure.
  18. Engine oil temperature gauges indicate the temperature of the oil
    Entering the engine.
  19. Why do helicopters require a minimum of two synchronous tachometer systems?
    One indicates engine RPM and the other main rotor RPM.
  20. If the thermocouple leads were inadvertently crossed at installation, what would the cylinder temperature gauge pointer indicate?
    Moves off-scale on the zero side of the meter.
  21. A common type of electrically operated oil temperature gauge utilizes
    Either a Wheatstone bridge or ratiometer circuit.
  22. The indication on a thermocouple-type cylinder head temperature indicator is produced by
    A current generated by the temperature difference between dissimiliar metal hot and cold junctions.
  23. (1) Powerplant instrument range markings show whether the current state of powerplant operation is normal, acceptable for a limited time, or unauthorized.
    (2) Powerplant instrument range markings are based on installed engine operating limits which may not exceed (but are not necessarily equal to) those limits shown on the engine Type Certificate Data Sheet.

    Regarding the above statements,
    Both No.1 and No.2 are true.
  24. Thermocouple leads
    Are designed for a specific installation and may not be altered.
  25. What unit in a tachometer system sends information to the indicator?
    The three-phase AC generator.
  26. Which of the following instrument discrepancies require replacement of the instrument?
    • Glass cracked.
    • Will not zero out.
    • Pointer loose on shaft
    • Fogged.
  27. A Bourdon-tube instrument may be used to indicate
    • pressure.
    • temperature.
  28. An indication of unregulated power changes that result in continual drift of manifold pressure indication on a turbosupercharged aircraft engine is known as?
  29. Which of the following instrument conditions is acceptable and does NOT require immediate correction?
    Case paint chipped.
  30. A change in engine manifold pressure has a direct effect on the
    Mean effective cylinder pressure.
  31. Instruments that provide readings of low or negative pressure, such as manifold pressure gauges, are usually what type?
    Diaphragm or bellows.
  32. Instruments that measure relatively high fluid pressures, such as oil pressure gauges, are usually what type?
    Bourdon Tube.
  33. The RPM indication of a synchronous ac motor-tachometer is governed by the generator
  34. The EGT gauge used with reciprocating engines is primarily used to furnish temperature readings in order to
    Obtain the best mixture setting for fuel efficiency
  35. A red triangle, dot, or diamond mark on an engine instrument face or glass indicates
    Maximum limit for high transients such as starting.