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

Question 1

The standard state of gases refers to which temperature?

Accepted Answer

25° C

Answer

5° C

Answer

0° C

Answer

15° C

Question 2

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 3

How does the norm height of a gas balloon with maximum differential pressure change by dropping ballast?

Accepted Answer

It increases by 80 m when total mass is reduced by 1%

Answer

It increases by 8 m when total mass is reduced by 10%

Answer

It decreases by 8 m when total mass is reduced by 10%

Answer

It decreases by 80 m when total mass is reduced by 1%

Question 4

What effect can sudden insolation from sunlight have on a gas balloon?

Accepted Answer

The height at maximum differential pressure decreases

Answer

The height at maximum differential pressure increases

Answer

The hull pressure decreases

Answer

A sudden increase in rate of descent

Question 5

The standard state of gases refers to which temperature?

Accepted Answer

25° C

Answer

15° C

Answer

5° C

Answer

0° C

Question 6

The force resulting from the (positive) difference from load-bearing capacity and weight force, is referred to as:

Accepted Answer

Climb force

Answer

Load force

Answer

Upper force

Answer

Lift force

Question 7

Aerostatic lift, amongst other factors, depends on...

Accepted Answer

Air density

Answer

On the speed

Answer

Balloon mass

Answer

Shape of the envelope

Question 8

The aerostatic lift corresponds to which force?

Accepted Answer

The weight of the displaced air

Answer

The dynamic force due to airstream across the top of the hull

Answer

The drag due to airstream around the balloon envelope

Answer

The weight of the balloon less ballast

Question 9

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 10

The dynamic lift created by airflow across the top of the envelope of a balloon on the ground is referred to as?

Accepted Answer

False lift

Answer

Upper lift

Answer

Anti-ballast

Answer

Lower lift

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