Aircraft General Knowledge - PPL(H) - Private Pilot License

Question 1

The control mixing assembly...

Accepted Answer

Overlays periodic and collective control inputs for main rotor pitch angle change.

Answer

Releases the sprag freewheel and prevents rotor blockage by the engine.

Answer

Ensures a constant pressure distribution in a hydraulic control system of a helicopter.

Answer

Opens the throttle and increases engine performance if the collective is reduced.

Question 2

What does the abbreviation HSI stand for?

Accepted Answer

Horizontal Situation Indicator

Answer

Horrifying Steep Inclination

Answer

Hybernating System Indication

Answer

Horizontal Slip Indicator

Question 3

What is likely to be the cause if the engine runs unusually rough while checking the magnetos?

Accepted Answer

Sparking plug is defective

Answer

Short circuit on the ground cable

Answer

Ignition switch is faulty

Answer

Starter is faulty

Question 4

The Pitot / static system is required to...

Accepted Answer

Measure total and static air pressure.

Answer

Prevent icing of the Pitot tube.

Answer

Correct the reading of the airspeed indicator to zero when the aircraft is static on the ground.

Answer

Prevent potential static buildup on the aircraft.

Question 5

The highest absorbtion of humidity in fuel can be observed in which situation?

Accepted Answer

Almost empty tanks

Answer

During parking on cold aprons

Answer

Almost full tanks

Answer

During parking on wet gras areas

Question 6

How do you call fuel mixtures with a high amount of fuel?

Accepted Answer

Rich

Answer

Empty

Answer

Full

Answer

Lean

Question 7

The term "inclination" is defined as...

Accepted Answer

Angle between earth's magnetic field lines and horizontal plane.

Answer

Angle between magnetic and true north.

Answer

Deviation induced by electrical fields.

Answer

Angle between airplane's longitudinal axis and true north.

Question 8

Which part of the cycle of a four-stroke Otto engine can be seen in the attachment? See figure (AGK-007) Siehe Anlage 1

Accepted Answer

First stroke - induction

Answer

Second stroke - compression

Answer

Fourth stroke - exhaust

Answer

Third stroke - power

Question 9

What must be considered if the alternator fails in a helicopter?

Accepted Answer

No change as long as the battery provides enough power

Answer

The engine runs roughly and is prone to knocking

Answer

Only high power consumers will failing

Answer

All instruments and warning systems will fail

Question 10

What is the purpose of a belt clutch in the drive system?

Accepted Answer

It connects or disconnects the transmission from the engine to the main rotor gearbox

Answer

It allows the displacement of the ignition timing during start-up

Answer

It prevents blade movements in gusty wind conditions by blocking the drive shaft

Answer

It prevents the mechanical blocking of the main rotor during autorotation

Quiz Aircraft General Knowledge - PPL(H) - Private Pilot License

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