Aircraft General Knowledge - BPL Hot Air - Balloon Pilot License

Question 1

The boiling point of propane gas at atmospheric conditions is:

Accepted Answer

- 42 °C

Answer

+ 5 °C

Answer

- 23 °C

Answer

0 °C

Question 2

During a flight in an air mass with a temperature equal to ISA and the QNH set correctly, the indicated altitude is...

Accepted Answer

Equal to the true altitude

Answer

Equal to the standard atmosphere

Answer

Lower than the true altitude

Answer

Higher than the true altitude

Question 3

The hull fabric of a hot-air balloon undergoes the most continuous thermal stress in which area?

Accepted Answer

At the top area

Answer

In the apron area

Answer

In the lower third

Answer

At the equator

Question 4

The electronic remote hull thermometer of a hot-air balloon is operating by which principle?

Accepted Answer

Resistance- / Semiconductor principle

Answer

Venturi principle

Answer

Boyle principle

Answer

Bernoulli principle

Question 5

The vapour pressure of propane gas in a bottle depends in particular on:

Accepted Answer

The temperature

Answer

The rigidity of the bottle

Answer

The size of the bottle

Answer

The gas amount

Question 6

Damages to the hot-air balloon hull fabric are most critical in which area?

Accepted Answer

At the top area

Answer

In the lower third

Answer

At the equator

Answer

In the apron area

Question 7

The burning gas is pushed from the liquid gas phase through the riser tube to which component?

Accepted Answer

To the evaporator

Answer

To the pressure relief device

Answer

To the fill level indicator

Answer

To the controller

Question 8

Which gas is heavier than air?

Accepted Answer

Propane

Answer

Hydrogen

Answer

Helium

Answer

Illuminating gas

Question 9

Which of the gases stated below is NOT made up from hydrocarbons?

Accepted Answer

Hydrogen

Answer

Propane

Answer

Butane

Answer

Methane

Question 10

Liquefaction of propane gas results in a reduction in volume to what fraction of the gas volume?

Accepted Answer

1/260

Answer

1/160

Answer

1/360

Answer

1/60

Exam questions Aircraft General Knowledge - BPL Hot Air - Balloon Pilot License

BPL Hot Air - Balloon Pilot License: Aircraft General Knowledge 10 Questions no time limit

Exam questions Aircraft General Knowledge - BPL Hot Air - Balloon Pilot License

BPL Hot Air - Balloon Pilot License: Aircraft General Knowledge 10 Questions no time limit

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