Aircraft General Knowledge - BPL Hot Air - Balloon Pilot License

Question 1

Why should liquid gas bottles for hot-air balloons be transported upright?

Accepted Answer

To prevent damage on the riser tube

Answer

Because no other positions are approved

Answer

To prevent exiting of residual gas

Answer

To keep the armature panel clean

Question 2

What is the purpose of the sounding pipe valve?

Accepted Answer

To indicate the volumetric filling limit

Answer

It allows pressure equalization during cruise at high altitude

Answer

It prevents air from entering the burner system

Answer

For venting the liquid gas container bottle

Question 3

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 4

A flight level is a...

Accepted Answer

Pressure altitude

Answer

True altitude

Answer

Density altitude

Answer

Altitude above ground

Question 5

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

Question 6

A pilot burner which is fed by the gas phase, works by which principle?

Accepted Answer

Bunsen principle

Answer

Electrostatic principle

Answer

Aerostatic principle

Answer

Aerodynamic principle

Question 7

Which is the purpose of the altimeter subscale?

Accepted Answer

To reference the altimeter reading to a predetermined level such as mean sea level, aerodrome level or pressure level 1013.25 hPa

Answer

To correct the altimeter reading for system errors

Answer

To set the reference level for the altitude decoder of the transponder

Answer

To adjust the altimeter reading for non-standard temperature

Question 8

The boiling point of propane gas at atmospheric conditions is:

Accepted Answer

- 42 °C

Answer

+ 5 °C

Answer

- 23 °C

Answer

0 °C

Question 9

The hull of a hot-air balloon is made up by which material?

Accepted Answer

Synthetic fabric

Answer

Silk fabric

Answer

Linen fabric

Answer

Cotton fabric

Question 10

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 too heavy otherwise

Answer

To provide space for expansion in case of external cooling

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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