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

2 - Below maximum differential pressure of a gas balloon, temperature increase of the carrying gas by 1K results in: Volume decrease by 0,4% Volume increase by 0,4% Volume increase by 4% Volume decrease by 4%

3 - 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%.

4 - 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.

5 - How does a gas react when released from a pressurized container? The gas heats adiabatically due to expansion The gas cools adiabatically due to expansion. The gas condenses inside the envelope The gas cools due to thermal contact with environmental air.

6 - The dynamic lift created by airflow across the top of the envelope of a balloon on the ground is referred to as? Upper lift Anti-ballast Lower lift False lift

7 - What effect can sudden insolation from sunlight have on a gas balloon? The height at maximum differential pressure decreases. The height at maximum differential pressure increases. The hull pressure decreases. A sudden increase in rate of descent.

8 - 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

9 - 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

10 - What statement is correct with regard to the density of a gas? The density increases with increasing temperature and constant volume. The density decreases with increasing temperature and constant volume. The density decreases with increasing temperature and constant pressure. The density decreases with decreasing volume and constant temperature.

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