1) The 4 strokes in order
- intake-compression-ignition-exhaust (correct answer)
- intake-compression-exhaust-ignition
- compression-ignition-intake-exhaust
- exhaust-intake-compression-ignition
Explanation:
2) While using carburetor heating, the density of intake air will…
- decrease, so the mixture goes rich which leads to decreased engine speed. (correct answer)
- decrease, so the mixture goes rich which leads to increased engine speed.
- increase, so the mixture goes lean which leads to decreased engine speed.
- increase, so the mixture goes lean which leads to increased engine speed.
Explanation:
The fuel/air mixture. Warm air is less dense than cold air, hence the application of heat increases the fuel-to-air ratio.
See explanation on Wikipedia.
3) The advantage of fuel injection is the fact, that it is free of icing…
- is decreasing. (correct answer)
- is increasing.
Explanation:
An engine accomplishes much of its cooling by the flow of oil through the lubrication system. The lubrication system aids in cooling by reducing friction and absorbing heat from internal engine parts. Many airplane engines use an oil cooler, a small radiator device that will cool the oil before it is re-circulated through the engine.
See explanation on Wikipedia.
4) The yellow arc on the airspeed indicates…
- the speed region between Vno and Vne
- the speed region between Vs and Vno
- the speed region between Va and Vno
- the speed region between VA and Vne
Explanation:
Yellow arc: Caution Speed Range, for smooth air only.
Vs0: Beginning of the white arc. Stall speed or minimum flight speed in landing configuration.
Vs: Beginning of the green arc. Stall speed or minimum steady flight speed for which the aircraft is still controllable.
Vfe: Ending of the white arc. Maximum flap extended speed.
Vno: Green arc. Maximum structural cruising speed or maximum speed for normal operations.
Vne: Red line. Never exceed speed.
I would like to read more about that.
5) How the speed region between Vs0 and Vfe is marked on an airspeed indicator?
- white arc
- yellow arc
- red arc
- green arc
Explanation:
Yellow arc: Caution Speed Range, for smooth air only.
Vs0: Beginning of the white arc. Stall speed or minimum flight speed in landing configuration.
Vs: Beginning of the green arc. Stall speed or minimum steady flight speed for which the aircraft is still controllable.
Vfe: Ending of the white arc. Maximum flap extended speed.
Vno: Green arc. Maximum structural cruising speed or maximum speed for normal operations.
Vne: Red line. Never exceed speed.
I would like to read more about that.