Principles of Flight (Balloon) - Quiz BPL Gas - Balloon Pilot License

Question 1

Below maximum differential pressure of a gas balloon, temperature increase of the carrying gas by 1K results in:

Accepted Answer

Volume increase by 0,4%

Answer

Volume decrease by 0,4%

Answer

Volume increase by 4%

Answer

Volume decrease by 4%

Question 2

How does a gas react when released from a pressurized container?

Accepted Answer

The gas cools adiabatically due to expansion.

Answer

The gas heats adiabatically due to expansion

Answer

The gas condenses inside the envelope

Answer

The gas cools due to thermal contact with environmental air.

Question 3

At which height the load carrying capability of a gas balloon is reduced by approximately 50% compared to MSL?

Accepted Answer

At 6.500 m

Answer

At 11.000 m

Answer

At 18.000 m

Answer

At 1.500 m

Question 4

The vertical extend of air with pressure changing by 1% with 80 m difference in height is referred to as ...

Accepted Answer

Homogene

Answer

Unstable

Answer

Stable

Answer

Inhomogene

Question 5

The standard state of gases refers to which temperature?

Accepted Answer

25° C

Answer

5° C

Answer

0° C

Answer

15° C

Question 6

Doubling the pressure of a dry gas at constant temperature results in a change of the volume to:

Accepted Answer

Half the previous value.

Answer

Double the previous value

Answer

Four times the previous value.

Answer

A quarter of the previous value.

Question 7

How does the norm height of a gas balloon with maximum differential pressure change, when its mass is reduced by 1%?

Accepted Answer

Norm height increases by 80 m.

Answer

Norm height increases by 800 m.

Answer

Norm height decreases by 800 m.

Answer

Norm height decreases by 80 m

Question 8

The ratio between air pressures at different heights is referred to as:

Accepted Answer

Height number

Answer

Height value

Answer

Pressure number

Answer

Height ratio

Question 9

What is the difference between a gas balloon at or below maximum differential pressure during climb?

Accepted Answer

The balloon below maximum differential pressure climbs with constant rate to unlimited height.

Answer

The balloon at maximum differential pressure climbs with constant rate to unlimited height.

Answer

The balloon below maximum differential pressure climbs with constant rate up to maximum differential pressure height.

Answer

The balloon at maximum differential pressure climbs with constant rate up to maximum differential pressure height.

Question 10

The standard state of gases refers to which temperature?

Accepted Answer

25° C

Answer

15° C

Answer

5° C

Answer

0° C

Quiz Principles of Flight (Balloon) - Quiz BPL Gas - Balloon Pilot License

Test 10 Questions Quiz BPL Gas - Balloon Pilot License - Principles of Flight (Balloon), no time limit