Principles of Flight - ATPL - Airline Transport Pilot license

Question 1

The flight Mach number is 0.8 and the TAS is 400 kts. The speed of sound is:

Accepted Answer

500 kts

Answer

600 kts

Answer

480 kts

Answer

320 kts

Question 2

The sensor of a stall warning system can be activated by a change in the location of the

Accepted Answer

Stagnation point

Answer

Centre of lift

Answer

Centre of gravity

Answer

Transition region

Question 3

Critical Mach number is the free stream Mach number at which:

Accepted Answer

Local supersonic flow first exists on any part of the aeroplane.

Answer

There is subsonic flow over all parts of the aeroplane.

Answer

The aeroplane has zero buffet margin.

Answer

There is supersonic flow over all parts of the aeroplane.

Question 4

Which type of stall has the largest associated angle of attack?

Accepted Answer

Deep stall

Answer

Low speed stall

Answer

Accelerated stall

Answer

Shock stall

Question 5

An aeroplane has static directional stability; in a side-slip to the right, initially the:

Accepted Answer

nose of the aeroplane tends to move to the right.

Answer

nose of the aeroplane tends to move to the left.

Answer

nose of the aeroplane will remain in the same direction.

Answer

right wing tends to go down.

Question 6

The units of wing loading (I) W / S and (II) dynamic pressure q are:

Accepted Answer

(I) N / m^2, (II) N / m^2.

Answer

(I) kg / m, (II) N / m^2.

Answer

(I) N / m^3, (II) kg / m^2.

Answer

(I) N / m, (II) kg.

Question 7

After take-off the slats (when installed) are always retracted later than the flaps. Why?

Accepted Answer

Because SLATS EXTENDED gives a large decrease in stall speed with relatively less drag

Answer

Because VMCA with SLATS EXTENDED is more favourable compared to the FLAPS EXTENDED situation

Answer

Because SLATS EXTENDED provides a better view from the cockpit than FLAPS EXTENDED

Answer

Because FLAPS EXTENDED gives a large decrease in stall speed with relatively less drag

Question 8

When the air is passing through an expansion wave the Mach number will

Accepted Answer

Increase.

Answer

Decrease and beyond a certain Mach number start increasing again.

Answer

Stay constant.

Answer

Decrease.

Question 9

The aft movement of the centre of pressure during acceleration through the transonic range will:

Accepted Answer

Increase the static longitudinal stability.

Answer

Decrease the longitudinal stability.

Answer

Increase the static lateral stability.

Answer

Decrease the static lateral stability.

Question 10

When power assisted controls are used for pitch control:

Accepted Answer

A part of the aerodynamic forces is still felt on the column.

Answer

Trimming is superfluous.

Answer

They only function in combination with an elevator trim tab.

Answer

Aerodynamic balancing of the control surfaces is meaningless.

Exam questions Principles of Flight - ATPL - Airline Transport Pilot license

ATPL - Airline Transport Pilot license: Principles of Flight 10 Questions no time limit