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Exam simulation Aircraft General Knowledge Quiz BPL Gas - Balloon Pilot License

Exam simulation bpl-gas 100 questions on 120 minutes

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1 - The density of helium gas under standard conditions is: 0,2 kg / m3 2 kg / m3 0,02 g / m3 0,2 g / m3

2 - What technical measure provides electric conductivity to the hull ropes of a web-less gas balloon? Wrapping with plastic tape. A surface painting Impregnation of the ropes Embedded steel threads (filiaments).

3 - In which way may an altimeter subscale which is set to an incorrect QNH lead to an incorrect altimeter reading? If the subscale is set to a higher than actual pressure, the indication is too low. This may lead to much greater heights above the ground than intended If the subscale is set to a lower than actual pressure, the indication is too high. This may lead to much closer proximity to the ground than intended If the subscale is set to a lower than actual pressure, the indication is too low. This may lead to much closer proximity to the ground than intended If the subscale is set to a higher than actual pressure, the indication is too high. This may lead to much closer proximity to the ground than intended

4 - A true altitude is... A height above ground level corrected for non-standard pressure An altitude above mean sea level corrected for non-standard temperature. A height above ground level corrected for non-standard temperature. A pressure altitude corrected for non-standard temperature.

5 - Lower-than-standard temperature may lead to... An altitude indication which is too high. A correct altitude indication as long as the altimeter subscale is set to correct for non-standard temperature. An altitude indication which is too low. A blockage of the Pitot tube by ice, freezing the altimeter indication to its present value

6 - How will the sag of the pull rope change during descent? It will remain unchanged It will increase It will change periodically It will decrease

7 - What values are usually marked with a red line on instrument displays? Operational limits Caution areas Recommended areas Operational areas

8 - A vertical speed indicator measures the difference between... Instantaneous total pressure and previous total pressure. Total pressure and static pressure Dynamic pressure and total pressure. Instantaneous static pressure and previous static pressure.

9 - Which instrument can be affected by the hysteresis error? Tachometer Altimeter Vertical speed indicator Direct reading compass

10 - The altimeter's reference scale is set to airfield pressure (QFE). What indication is shown during the flight? Airfield elevation Pressure altitude Altitude above MSL Height above airfield

11 - The vertical speed indicator measures the difference of pressure between... The present dynamic pressure and the dynamic pressure of a previous moment. The present total pressure and the total pressure of a previous moment. The present dynamic pressure and the static pressure of a previous moment The present static pressure and the static pressure of a previous moment.

12 - The assembly of the panels to the hull of a web-less gas balloon is done ... By vulcanisation. By stitching. By welding By glueing.

13 - During a flight in an air mass with a temperature equal to ISA and the QNH set correctly, the indicated altitude is... Higher than the true altitude. Lower than the true altitude. Equal to the standard atmosphere. Equal to the true altitude

14 - The purpose of the drag lines of the parachute is ... To transfer the carrying force of the balloon in the top opening area To transfer the force from the pull rope to the parachute. To keep the parachute in the center of the top opening. To transfer the force from the pull rope to the free-balloon hull.

15 - The burst of a hydrogen pressure line may result in what risk? The risk of hydrogen collecting in the basket and causing breath shortness. The risk of hydrogen self-igniting and burning with a bright flame. The risk of hydrogen dissipating to the atmosphere and poisening the air The risk of hydrogen self-igniting and burning with invisible flame.

16 - The measurement of altitude is based on the change of the... Dynamic pressure. Static pressure. Differential pressure. Total pressure.

17 - A flight level is a... True altitude Density altitude. Pressure altitude. Altitude above ground.

18 - A vertical speed indicator connected to a too big equalizing tank results in... Mechanical overload No indication Indication too low Indication too high

19 - The term "static pressure" is defined as pressure... Resulting from orderly flow of air particles. Inside the airplane cabin. Sensed by the pitot tube. Of undisturbed airflow.

20 - The emergency opening of a gas balloon is located where? To the side of the appendix At the upper pole At the equator To the side of the valve

21 - A gas balloon has to be equipped with which tethers? 1 at 40 m or 4 at 10 m 1 at 30 m or 3 at 10 m 2 at 10 m or 1 at 20 m 2 at 20 m or 1 at 10 m

22 - Which of the following options states the working principle of a vertical speed indicator? Measuring the present static air pressure and comparing it to the static air pressure inside a reservoir Static air pressure is measured and compared against a vacuum Measuring the vertical acceleration through the displacement of a gimbal-mounted mass Total air pressure is measured and compared to static pressure

23 - The towing rope of a gas balloon can be found on ... The rip panel side The sandpourer side The sliding side The entry side

24 - QFE is the... Altitude above the reference pressure level 1013.25 hPa. Magnetic bearing to a station. Barometric pressure adjusted to sea level, using the international standard atmosphere (ISA). Barometric pressure at a reference datum, typically the runway threshold of an airfield.

25 - What is the purpose of the closing rope of a gas balloon? To close the sand disposer To close the appendix To close the emergency opening To secure the towing rope

26 - The minimum length of the towing rope is: 20 m 50 m 100 m 30 m

27 - During a flight in colder-than-ISA air the indicated altitude is... Higher than the true altitude Equal to the standard altitude. Lower than the true altitude. Eqal to the true altitude.

28 - Which is the purpose of the altimeter subscale? To reference the altimeter reading to a predetermined level such as mean sea level, aerodrome level or pressure level 1013.25 hPa To adjust the altimeter reading for non-standard temperature To set the reference level for the altitude decoder of the transponder To correct the altimeter reading for system errors

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