Principles of Flight (Balloon) - BPL Hot Air - Balloon Pilot License

Question 1

Which of the following statements is correct?

Accepted Answer

At higher altitude, sink rate in case of cooling is increased due to less drag by less density

Answer

At higher altitude, sink rate by cooling is not increased because due to low density the mass inside the hull is also less

Answer

Higher drag at higher altitude prevents increased sink rate in case of cooling

Answer

Maximum sink rate must be equal at all altitudes as prescribed by design regulations

Question 2

The dynamic lift created by airflow across the top of the envelope of a balloon on the ground is referred to as?

Accepted Answer

False lift

Answer

Lower lift

Answer

Upper lift

Answer

Anti-ballast

Question 3

The ratio between air pressures at different heights is referred to as:

Accepted Answer

Height number

Answer

Pressure number

Answer

Height value

Answer

Height ratio

Question 4

With pressure and temperature given, any gas being heavier or lighter than air depends on what?

Accepted Answer

On the molecule mass of the gas

Answer

On the mean kinetic energy of the molecules

Answer

On the content of water vapour in the gas

Answer

On the number of gas molecules

Question 5

The increase in load carrying capability by increasing the hull air temperature by the same temperature difference ...

Accepted Answer

Decreases with altitude

Answer

Increases with balloon mass

Answer

Increases with altitude

Answer

Decreases with sinking

Question 6

With regard to gases, which statement is correct?

Accepted Answer

Volume increases with increasing temperature and constant pressure

Answer

Temperature increases with increasing volume and decreasing pressure

Answer

Temperature decreases with increasing pressure and constant volume

Answer

Pressure decreases with increasing temperature and constant volume

Question 7

Aerostatic lift, amongst other factors, depends on...

Accepted Answer

Air density

Answer

Shape of the envelope

Answer

On the speed

Answer

Balloon mass

Question 8

If heating is stopped and the parachute vent is not activated, a hot-air balloon reaches a final sinkrate of approximately:

Accepted Answer

6 m/s

Answer

2 m/s

Answer

10 m/s

Answer

20 m/s

Question 9

What statement is correct with regard to the density of a gas?

Accepted Answer

The density decreases with increasing temperature and constant pressure

Answer

The density increases with increasing temperature and constant volume

Answer

The density decreases with decreasing volume and constant temperature

Answer

The density decreases with increasing temperature and constant volume

Question 10

The final sinkrate of a hot-air balloon is achieved after descent over a vertical distance of:

Accepted Answer

250 - 450 m

Answer

1000 - 2000 m

Answer

50 - 100 m

Answer

500 - 1000 m

Exam questions Principles of Flight (Balloon) - BPL Hot Air - Balloon Pilot License

BPL Hot Air - Balloon Pilot License: Principles of Flight (Balloon) 10 Questions no time limit

Exam questions Principles of Flight (Balloon) - BPL Hot Air - Balloon Pilot License

BPL Hot Air - Balloon Pilot License: Principles of Flight (Balloon) 10 Questions no time limit

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