Principle of Flight - EASA PPL(A) - Private Pilot License

Question 1

Bernoulli's equation for frictionless, incompressible gases states that...

Accepted Answer

Total pressure = dynamic pressure + static pressure.

Answer

Static pressure = total pressure + dynamic pressure

Answer

Total pressure = dynamic pressure - static pressure

Answer

Dynamic pressure = total pressure + static pressure.

Question 2

Rudder deflections result in a turn of the aeroplane around the...

Accepted Answer

Vertical axis.

Answer

Rudder axis

Answer

Lateral axis

Answer

Longitudinal axis.

Question 3

Which factor can be changed by deploying flaps for landing?

Accepted Answer

The trim condition

Answer

The position of the center of gravity

Answer

The effectiveness of the ailerons

Answer

The twist effect of the engine

Question 4

Number 3 in the drawing corresponds to the... See figure (PFA-010) (1,00 P.) Siehe Anlage 1

Accepted Answer

Camber line

Answer

Chord

Answer

Thickness

Answer

Chord line.

Question 5

How do induced drag and parasite drag change with increasing airspeed during a horizontal and stable cruise flight?

Accepted Answer

Induced drag decreases and parasite drag increase

Answer

Parasite drag decreases and induced drag increases

Answer

Parasite drag decreases and induced drag decreases

Answer

Induced drag increases and parasite drag increases

Question 6

The position of the the center of pressure at a positively shaped profile...

Accepted Answer

Moves to the trailing edge while the angle of attack becomes smaller.

Answer

Moves to the leading edge while the angle of attack becomes smaller.

Answer

Is located at approximately 25% of the chord, measured from the leading edge

Answer

Does not move since it is independent of the angle of attack.

Question 7

The ratio of span and mean chord length is referred to as...

Accepted Answer

Aspect ratio.

Answer

Trapezium shape.

Answer

Tapering

Answer

Wing sweep.

Question 8

What structural item provides lateral stability to an airplane?

Accepted Answer

Wing dihedral

Answer

Differential aileron deflection

Answer

Vertical tail

Answer

Elevator

Question 9

What is the diffeence between spin and spiral dive?

Accepted Answer

Spin: stall at inner wing, speed constant; Spiral dive: airflow at both wings, speed increasing rapidly

Answer

Spin: stall at outer wing, speed constant; Spiral dive: airflow at both wings, speed increasing rapidly

Answer

Spin: stall at outer wing, speed increasing rapidly; Spiral dive: airflow at both wings, speed constant

Answer

Spin: stall at inner wing, speed increasing rapidly; Spiral dive: airflow at both wings, speed constant

Question 10

The laminar boundary layer on the aerofoil is located between...

Accepted Answer

The stagnation point and the transition point.

Answer

The transition point and the separation point.

Answer

The transition point and the center of pressure

Answer

The stagnation point and the center of pressure

Quiz Principle of Flight - EASA PPL(A) - Private Pilot License

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