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Exam simulation Aircraft General Knowledge Quiz BPL Hot Air - Balloon Pilot License

Exam simulation bpl-hot-air 100 questions on 120 minutes

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1 - Why should liquid gas bottles for hot-air balloons be transported upright? Because no other positions are approved. To prevent damage on the riser tube. To prevent exiting of residual gas. To keep the armature panel clean.

2 - The parapet height of a hot-air balloon basket is at least: 100 cm, in commercial operation 110 cm 80 cm, in commercial operation 100 cm 120 cm, in commercial operation 130 cm 110 cm, in commercial operation 110 cm

3 - The hull load of a hot-air balloon is carried by ... By the towing ropes By the top ropes. The carrying ropes The fixing ropes.

4 - The vapour pressure of propane gas in a bottle depends in particular on: The rigidity of the bottle. The size of the bottle. The temperature. The gas amount.

5 - The basket ropes of a hot-air balloon are usually fixed to ... The burner The burner cage. To the Scoop. The Nomex apron.

6 - 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 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 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

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

8 - The boiling point of propane gas at atmospheric conditions is: .+ 5 °C .- 42 °C .- 23 °C 0 °C

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

10 - The carrying ropes of a hot-air balloon are made up from: Manila rope Stainless steel Copper Duralum

11 - Damages to the hot-air balloon hull fabric are most critical in which area? In the lower third. At the top area At the equator In the apron area.

12 - The main blast valve is located where? At the main cylinder At the burner At the hull equator At the upper hull part

13 - Liquifaction of propane gas results in a reduction in volume to what fraction of the gas volume? 1/160 1/260 1/360 1/60

14 - 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 correct the altimeter reading for system errors To set the reference level for the altitude decoder of the transponder To adjust the altimeter reading for non-standard temperature

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

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

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

18 - Which parts of a hot-air balloon provide protection for the basket during landing? Wheels Rubber pads Wearing strips Steel runners

19 - What ist the purpose of the sounding pipe valve? It allows pressure equalization during cruise at high altitude To indicate the volumetric filling limit. It prevents air from entering the burner system For venting the liquid gas container bottle.

20 - What is indicated by a red line on the hull thermometer with an analog scale? The minimum permissable value The take-off temperature The maximum permissable value The recommended operating value

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

22 - What is indicated by a yellow arc on the hull thermometer with an analog scale? Maximium permissable values The cautious area Readbility improvement The normal operating area

23 - The main burner is fed by which phase? By the low-pressure phase By the gas phase By the plasma phase By the liquid phase

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

25 - About the lower end of the pull rope of a hot-air balloon it can be said: It has an especially smooth surface. It is fixed to the lower basket area It has to be lubricated before every take-off It is particularly heat resistant.

26 - What amount of ignitable mixture can be made from 1 L (0,001 m3) liquid propane gas? 0,38 m3 0,26 m3 12 m3 1,2 m3

27 - Under which conditions false readouts are possible on hull thermometers using radio communication from sensor to indicator panel? When radio messages are received When the sensor battery is almost empty When the hull temperature exceeds 110 °C When there is no intervisiblity to temperature sensor

28 - With web-less balloon hulls, the load is connected to: The load belt. The towing rope. The pull-rope The basket rope.

29 - The hull fabric of a hot-air balloon undergoes the most continuous thermal stress in which area? In the apron area. In the lower third. At the equator. At the top area.

30 - The burning gas is pushed from the liquid gas phase through the riser tube to which component? To the evaporator To the pressure relief device To the fill level indicator To the controller

31 - A pilot burner which is fed by the gas phase, works by which principle? Electrostatic principle. Bunsen principle Aerostatic principle. Aerodynamic principle

32 - What is the purpose of the vapourizor coils of the burner system? To induce a rotation movement in the liquid gas to get a better mixture For cooling of the liquid gas after exiting the burner nozzles To heat the liquid gas, so it will vapourize immediately after exiting the burner nozzle To vapourize the liquid gas, so it will be emitted from the burner nozzle in gasous form

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

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

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

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

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

38 - The hull of a hot-air balloon is made up by which material? Synthetic fabric Silk fabric Linen fabric Cotton fabric

39 - Which of the gases stated below is NOT made up from hydrocarbons? Propane Butane Methane Hydrogen

40 - The electronic remote hull thermometer of a hot-air balloon is operating by which principle? Venturi principle Boyle principle. Resistance- / Semiconductor principle. Bernoulli principle.

41 - Why should a liquid gas bottle only be filled to 80% of its volume? Because temperature would get too high. Because it would get to heavy otherwise. To provide space for temperature-induced expansion. To provide space for expansion in case of external cooling

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

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

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

45 - Which gas is heavier than air? Hydrogen Propane Helium Illuminating gas

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