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Home > Training for exam quizzes ATPL, PPL(A), PPL(H), BPL Hot Air, BPL Gas, SPL - Sailplane, EASA Drone, FAA Drone > Principles of Flight (Balloon) - Quiz BPL Gas - Balloon Pilot License

Quiz Principles of Flight (Balloon) - Quiz BPL Gas - Balloon Pilot License

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

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1 - In a given height, a given amount of ballast is uloaded from a gas balloon. How is the increase in height at 5500m different from the increase in height at MSL by unloading the same amount of ballast? At 5500m the increase in height is twice as high. At 5500m the increase in height is three times as high. At both heights the same increase in height is observed. At 5500m the increase in height is four times as high.

2 - The aerostatic lift corresponds to which force? The dynamic force due to airstream across the top of the hull The weight of the displaced air The drag due to airstream around the balloon envelope The weight of the balloon less ballast

3 - The standard state of gases refers to which temperature? 15° C 5° C 25° C 0° C

4 - At which height the load carrying capability of a gas balloon is reduced by approximately 50% compared to MSL? At 6.500 m At 11.000 m At 18.000 m At 1.500 m

5 - The standard state of gases refers to which temperature? 5° C 0° C 15° C 25° C

6 - What is the relationship between pressure and volume of a dry gas at constant temperature? The volume increases by a factor of 4 with double pressure The volume is inversely proportional to pressure The ration between pressure and volume is constant The volume increases proportional with pressure

7 - With pressure and temperature given, any gas being heavier or lighter than air depends on what? On the content of water vapour in the gas On the mean kinetic energy of the molecules On the number of gas molecules On the molecule mass of the gas

8 - How does the norm height of a gas balloon with maximum differential pressure change by dropping ballast? It increases by 8 m when total mass is reduced by 10%. It increases by 80 m when total mass is reduced by 1% It decreases by 8 m when total mass is reduced by 10%. It decreases by 80 m when total mass is reduced by 1%.

9 - What is a direct consequence of increase of the carrying gas temperature at a gas balloon with maximum differential pressure? Climb force decreases. Weight force increases. Lift force decreases. Load-bearing capability increases.

10 - How does the norm height of a gas balloon with maximum differential pressure change, when its mass is reduced by 1%? Norm height increases by 800 m. Norm height decreases by 800 m. Norm height decreases by 80 m Norm height increases by 80 m.

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