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

Question 1

How do volume, density and temperature change when a gas is being compressed?

Accepted Answer

Volume decreases, density increases, temperature increases.

Answer

Volume decreases, density decreases, temperature decreases.

Answer

Volume decreases, density increases, temperature increases

Answer

Volume increases, density decreases, temperature decreases.

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

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

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 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

Question 6

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 7

At equilibrium the inner overpressure of a free balloon is highest at:

Accepted Answer

The upper pole.

Answer

At the lower opening.

Answer

At the center of the hull.

Answer

At the equator.

Question 8

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 9

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 10

The standard state of gases refers to which temperature?

Accepted Answer

25° C

Answer

0° C

Answer

15° C

Answer

5° C

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