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

Question 1

Which statement concerning the angle of attack is correct?

Accepted Answer

A too large angle of attack may result in a loss of lift

Answer

The angle of attack cannot be negative

Answer

Increasing the angle of attack results in decreasing lift

Answer

The angle of attack is constant throughout the flight

Question 2

A take-off with flaps in take-off position causes...

Accepted Answer

A shortening of the take-off run.

Answer

An increased rate of climb

Answer

An increased acceleration

Answer

A decrease in drag.

Question 3

Which of the listed wing shapes has the lowest induced drag?

Accepted Answer

Elliptical shape

Answer

Double trapezoidal shape

Answer

Rectangular shape

Answer

Trapezoidal shape

Question 4

The drag coefficient...

Accepted Answer

Cannot be lower than a non-negative, minimal value.

Answer

Increases with increasing airspeed.

Answer

Is proportional to the lift coefficient.

Answer

May range from zero to an infinite positive value

Question 5

What effects typically result from propeller icing?

Accepted Answer

Reduced power output, decreasing RPM

Answer

Increased power output, decreasing RPM.

Answer

Increased power output, increasing RPM.

Answer

Reduced power output, increasing RPM.

Question 6

What describes "wing loading"?

Accepted Answer

Weight per wing area

Answer

Drag per wing area

Answer

Drag per weight

Answer

Wing area per weight

Question 7

How does a laminar boundary layer differ from a turbulent boundary layer?

Accepted Answer

The turbulent boundary layer can follow the airfoil camber at higher angles of attack

Answer

The laminar boundary layer produces lift, the turbulent boundary layer produces drag

Answer

The turbulent boundary layer is thicker and provides less skin-friction drag

Answer

The laminar boundary layer is thinner and provides more skin-friction drag

Question 8

Which constructive feature is shown in the figure? See figure (PFA-006) L: Lift (1,00 P.) Siehe Anlage 4

Accepted Answer

Lateral stability by wing dihedral

Answer

Longitudinal stability by wing dihedral

Answer

Differential aileron deflection

Answer

Directional stability by lift generation

Question 9

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 10

Which design feature can compensate for adverse yaw?

Accepted Answer

Differential aileron defletion

Answer

Wing dihedral

Answer

Full deflection of the aileron

Answer

Aileron trim

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

Test 10 Questions PPL(A) - Private Pilot License - Principle of Flight, no time limit