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

Question 1

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

Accepted Answer

Air density.

Answer

Shape of the envelope.

Answer

On the speed.

Answer

Balloon mass.

Question 2

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 3

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 4

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 5

The standard state of gases refers to which temperature?

Accepted Answer

25° C

Answer

0° C

Answer

15° C

Answer

5° C

Question 6

The force resulting from the (positive) difference from load-bearing capacity and weight force, is referred to as:

Accepted Answer

Climb force

Answer

Upper force

Answer

Lift force

Answer

Load force

Question 7

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 8

The standard state of gases refers to which temperature?

Accepted Answer

25° C

Answer

15° C

Answer

0° C

Answer

5° C

Question 9

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 10

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.

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