Aircraft General Knowledge - BPL Hot Air - Balloon Pilot License

Question 1

QFE is the...

Accepted Answer

Barometric pressure at a reference datum, typically the runway threshold of an airfield

Answer

Magnetic bearing to a station

Answer

Barometric pressure adjusted to sea level, using the international standard atmosphere (ISA)

Answer

Altitude above the reference pressure level 1013.25 hPa

Question 2

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 3

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 4

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 5

Under which conditions false readouts are possible on hull thermometers using radio communication from sensor to indicator panel?

Accepted Answer

When the sensor battery is almost empty

Answer

When radio messages are received

Answer

When the hull temperature exceeds 110 °C

Answer

When there is no intervisibility to temperature sensor

Question 6

The boiling point of propane gas at atmospheric conditions is:

Accepted Answer

- 42 °C

Answer

+ 5 °C

Answer

- 23 °C

Answer

0 °C

Question 7

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

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 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

Question 10

The term "static pressure" is defined as pressure...

Accepted Answer

Of undisturbed airflow

Answer

Sensed by the pitot tube

Answer

Inside the airplane cabin

Answer

Resulting from orderly flow of air particles

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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