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POF 3

Authored by Duy Nguyễn

English

University

Used 4+ times

POF 3
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50 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An aeroplane is performing a co-ordinated level turn with a constant bank angle. If the airspeed is increased the rate of turn will _ (i) and the load factor will _ (ii)

i) decrease; ii) decrease.

i) decrease; ii) not change.

i) increase; ii) increase.

i) increase; ii) not change.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does positive camber of an aerofoil affect static longitudinal stability?

Negatively, because the lift vector rotates forward at increasing angle of attack.

Positively, because the centre of pressure shifts rearward at increasing angle of attack.

No effect, because camber of the aerofoil produces a constant pitch down moment coefficient, independent of angle of attack.

Positively, because the lift vector rotates backward at increasing angle of attack.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A statically stable aeroplane:

is never dynamically stable.

is always dynamically stable.

can show positive. neutral or negative dynamic longitudinal stability.

will never show positive dynamic longitudinal stability. but always neutral dynamic longitudinal stability.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

At MCRIT, a shockwave will appear first:

at the leading edge.

near to the point of maximum wing thickness.

at the trailing edge.

on the underside of the wing

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement is correct? 1) The angle of attack of a positively cambered aerofoil has a negative value when the lift coefficient equals zero. 2) There is a nose down pitching moment about a positively cambered aerofoil when the lift coefficient equals zero.

1) is incorrect, 2) is correct.

1) is correct, 2) is incorrect.

1) is correct, 2) is correct.

1) is incorrect, 2) is incorrect

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Comparing the differences between a horizontal trimmable stabiliser and an elevator trim tab, which statement is correct? 1) A stabiliser trim is less suitable for jet transport aeroplanes because of their large speed range. 2) A trim tab is a more powerful means of trimming.

1) is correct, 2) is correct.

1) is incorrect, 2) is incorrect

1) is correct, 2) is incorrect.

1) is incorrect, 2) is correct.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Considering subsonic incompressible airflow through a Venturi, which statement is correct? 1) The dynamic pressure in the throat is lower than in the undisturbed airflow. 2) The total pressure in the throat is higher than in the undisturbed airflow.

1) is correct, 2) is incorrect.

1) is incorrect, 2) is correct.

1) is incorrect, 2) is incorrect

1) is correct, 2) is correct.

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