Aircraft General Knowledge - Quiz BPL Hot Air - Balloon Pilot License

Question 1

What is the purpose of the vapourizor coils of the burner system?

Accepted Answer

To heat the liquid gas, so it will vapourize immediately after exiting the burner nozzle

Answer

To induce a rotation movement in the liquid gas to get a better mixture

Answer

For cooling of the liquid gas after exiting the burner nozzles

Answer

To vapourize the liquid gas, so it will be emitted from the burner nozzle in gasous form

Question 2

In which way may an altimeter subscale which is set to an incorrect QNH lead to an incorrect altimeter reading?

Accepted Answer

If the subscale is set to a higher than actual pressure, the indication is too high. This may lead to much closer proximity to the ground than intended

Answer

If the subscale is set to a lower than actual pressure, the indication is too high. This may lead to much closer proximity to the ground than intended

Answer

If the subscale is set to a lower than actual pressure, the indication is too low. This may lead to much closer proximity to the ground than intended

Answer

If the subscale is set to a higher than actual pressure, the indication is too low. This may lead to much greater heights above the ground than intended

Question 3

Liquifaction 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

Question 4

The measurement of altitude is based on the change of the...

Accepted Answer

Static pressure

Answer

Dynamic pressure.

Answer

Differential pressure.

Answer

Total pressure.

Question 5

Why should a liquid gas bottle only be filled to 80% of its volume?

Accepted Answer

To provide space for temperature-induced expansion.

Answer

Because temperature would get too high.

Answer

Because it would get to heavy otherwise.

Answer

To provide space for expansion in case of external cooling

Question 6

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 7

What is indicated by a yellow arc on the hull thermometer with an analog scale?

Accepted Answer

The cautious area

Answer

Maximium permissable values

Answer

Readbility improvement

Answer

The normal operating area

Question 8

The main blast valve is located where?

Accepted Answer

At the burner

Answer

At the main cylinder

Answer

At the hull equator

Answer

At the upper hull part

Question 9

The basket ropes of a hot-air balloon are usually fixed to ...

Accepted Answer

The burner cage.

Answer

The burner

Answer

To the Scoop.

Answer

The Nomex apron.

Question 10

What is indicated by a red line on the hull thermometer with an analog scale?

Accepted Answer

The maximum permissable value

Answer

The minimum permissable value

Answer

The take-off temperature

Answer

The recommended operating value

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