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

Question 1

What ist 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 2

The boiling point of propane gas at atmospheric conditions is:

Accepted Answer

.- 42 °C

Answer

.+ 5 °C

Answer

.- 23 °C

Answer

0 °C

Question 3

Which gas is heavier than air?

Accepted Answer

Propane

Answer

Hydrogen

Answer

Helium

Answer

Illuminating gas

Question 4

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 5

A flight level is a...

Accepted Answer

Pressure altitude.

Answer

True altitude

Answer

Density altitude.

Answer

Altitude above ground.

Question 6

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

Accepted Answer

Hydrogen

Answer

Propane

Answer

Butane

Answer

Methane

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

During a flight in colder-than-ISA air the indicated altitude is...

Accepted Answer

Higher than the true altitude

Answer

Lower than the true altitude.

Answer

Equal to the standard altitude.

Answer

Eqal to the true altitude.

Question 9

The altimeter's reference scale is set to airfield pressure (QFE). What indication is shown during the flight?

Accepted Answer

Height above airfield

Answer

Pressure altitude

Answer

Altitude above MSL

Answer

Airfield elevation

Question 10

The main burner is fed by which phase?

Accepted Answer

By the liquid phase

Answer

By the low-pressure phase

Answer

By the gas phase

Answer

By the plasma phase

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

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