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

Question 1

What impact may rain have on operation of a hot-air balloon?

Accepted Answer

Total mass and gas consumption increase

Answer

Rain drops hitting on the hull reduce the lift force.

Answer

The hull is deformed, which reduces lift.

Answer

The hull is cooled, resulting in less gas consumption.

Question 2

At which conditions does the arm blower have the highest effeiciency?

Accepted Answer

By completely filling the balloon opening with the air beam.

Answer

With as small distance to the balloon opening as possible.

Answer

By evenly swiveling for better air spreading.

Answer

By placing the blower inside the hull.

Question 3

The standard state of gases refers to which temperature?

Accepted Answer

25° C

Answer

0° C

Answer

15° C

Answer

5° C

Question 4

Which of the following statements is correct?

Accepted Answer

The density of hull air is lower than environmental air only if the hull temperature is higher than environmental temperature

Answer

The density of hull air is lower with decreasing environmental pressure

Answer

The density of hull air is higher with increasing environmental pressure

Answer

The density of hull air is lower than environmental air only if the hull temperature is lower than environmental temperature

Question 5

The vertical extend of air with pressure changing by 1% with 80 m difference in height is referred to as ...

Accepted Answer

Homogene

Answer

Inhomogene

Answer

Unstable

Answer

Stable

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

What effect has an increase in air temperature inside the hull of a hot air balloon by a given difference in temperature?

Accepted Answer

The increase in load carrying capacity decreases with height.

Answer

The increase in load carrying capacity increases with height.

Answer

The increase in rate of climb increases with height.

Answer

The reduction in sink rate increases with height.

Question 9

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 10

The final sinkrate of a hot-air ballon 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

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

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