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Boeing 737 · APU 题库（86 题）

Boeing 737 机型「APU」相关知识共 86 道题。想练习或模拟考试，请到 题库 · 模拟考试。
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1.The APU may be operated with APU bleed only up to a maximum altitude of

  1. 17,000ft ✓
  2. 35,000ft
  3. 10,000ft
正确答案：17,000ft　·　737　·　来源 b737.org.uk

2.The APU bleed valve

  1. 710 degrees C
  2. 725 degrees C
  3. may be open during engine start, but avoid engine power above idle. ✓
正确答案：may be open during engine start, but avoid engine power above idle.　·　737　·　来源 b737.org.uk

3.The APU LOW OIL PRESSURE light is

  1. Always illuminated when the APU switch is in the OFF position.
  2. Disarmed when the APU switch is in the OFF position. ✓
  3. Inhibited during APU start.
正确答案：Disarmed when the APU switch is in the OFF position.　·　737　·　来源 b737.org.uk

4.On the 737NG, the APU will automatically shut-down

  1. When the battery switch is placed OFF in flight only.
  2. When the battery switch is placed OFF at any time. ✓
  3. When the battery switch is placed OFF on the ground only.
正确答案：When the battery switch is placed OFF at any time.　·　737　·　来源 b737.org.uk

5.The overspeed light will illuminate when an APU RPM limit exceedance causes automatic shutdown

  1. the light extinguishes after 5 minutes from when the APU switch is placed to OFF ✓
  2. the light extinguishes when the APU switch is placed to OFF
  3. the light does not extinguishe after the APU switch is placed to OFF
正确答案：the light extinguishes after 5 minutes from when the APU switch is placed to OFF　·　737　·　来源 b737.org.uk

6.Should the APU switch fail to shut-off the APU

  1. Pull up the APU Fire Warning Switch. ✓
  2. Trip the APU fuel valve CB.
  3. The APU Overspeed Reset switch in the E & E compartment has been tripped and must be reset.
正确答案：Pull up the APU Fire Warning Switch.　·　737　·　来源 b737.org.uk

7.If the APU runs down due to fuel starvation, the Master Caution annunciation system will show

  1. APU only.
  2. APU and services being operated by the APU. ✓
  3. Services being operated by the APU only.
正确答案：APU and services being operated by the APU.　·　737　·　来源 b737.org.uk

8.The APU fire warning system gives aural and visual warnings

  1. In the flight deck and the APU compartment.
  2. Only in the flight deck.
  3. In the flight deck and main wheel well. ✓
正确答案：In the flight deck and main wheel well.　·　737　·　来源 b737.org.uk

9.During a normal APU start

  1. The amber LOW OIL PRESSURE light is lluminated until the APU oil pressure is normal (approx. 35% RPM). ✓
  2. The blue APU GEN OFF BUS bus light goes out at 95% RPM.
  3. The starter motor is engaged as soon as the master switch is released from START to ON.
正确答案：The amber LOW OIL PRESSURE light is lluminated until the APU oil pressure is normal (approx. 35% RPM).　·　737　·　来源 b737.org.uk

10.The APU fuel heater

  1. Is automatically operated and uses 5th stage bleed air from Engine No. 2.
  2. Is automatically operated and uses the APU compressor bleed air. ✓
  3. Uses heat supplied directly from the APU oil cooler.
正确答案：Is automatically operated and uses the APU compressor bleed air.　·　737　·　来源 b737.org.uk

11.If an APU fire warning is sensed

  1. The APU will shut-down and the extinguisher is discharged automatically.
  2. The APU will shut-down automatically. ✓
  3. The APU must be shut-down by pulling up the fire switch.
正确答案：The APU will shut-down automatically.　·　737　·　来源 b737.org.uk

12.The Allied Signal 131-9(B) APU generator is rated at:

  1. The same rating as an engine driven generator.
  2. 90 KVA up to 32,000ft and 66 KVA up to 41,000ft. ✓
  3. 45 KVA in-flight and 55KVA on the ground.
正确答案：90 KVA up to 32,000ft and 66 KVA up to 41,000ft.　·　737　·　来源 b737.org.uk

13.How is the APU is switched onto the AC electrical system?

  1. Automatically when the previous power source is disconnected.
  2. Automatically if the APU generator is running.
  3. By two APU switches individually operated. ✓
正确答案：By two APU switches individually operated.　·　737　·　来源 b737.org.uk

14.During a 737NG APU start

  1. EGT indication may fluctuate from 0° to 1100° C prior to normal EGT rise and should be monitored for exceedances
  2. It is not necessary to monitor EGT ✓
  3. Automatic shutdown will not occur in the event of EGT exceedance
正确答案：It is not necessary to monitor EGT　·　737　·　来源 b737.org.uk

15.The 737NG APU start cycle

  1. may take as long as 60 seconds.
  2. may take as long as 180 seconds.
  3. may take as long as 120 seconds. ✓
正确答案：may take as long as 120 seconds.　·　737　·　来源 b737.org.uk

16.The maximum aircraft altitude for both APU bleed and electrical load is?

  1. 17,000ft
  2. 35,000ft
  3. 10,000ft ✓
正确答案：10,000ft　·　737　·　来源 b737.org.uk

17.The maximum aircraft altitude for APU electrical load is?

  1. 35,000ft Garrett; 37,000ft Sundstrand; 41,000 Allied Signal. ✓
  2. 37,000ft Garrett; 35,000ft Sundstrand; 41,000 Allied Signal.
  3. 37,000ft Garrett; 37,000ft Sundstrand; 41,000 Allied Signal.
正确答案：35,000ft Garrett; 37,000ft Sundstrand; 41,000 Allied Signal.　·　737　·　来源 b737.org.uk

18.When does the APU fuel solenoid valve open?

  1. When oil pressure has reached 13psi.
  2. When oil pressure has reached 4psi. ✓
  3. When oil temperature has reached a minimum value.
正确答案：When oil pressure has reached 4psi.　·　737　·　来源 b737.org.uk

19.The APU Electrical Generator and APU Oil Cooler are cooled by

  1. A gear driven fan. ✓
  2. Ram air pressure.
  3. An Oil/Fuel heat exchanger.
正确答案：A gear driven fan.　·　737　·　来源 b737.org.uk

20.With a 737NG APU aborted start on the ground, another start may be attempted immediately but...

  1. But 3 minutes cooling is required between the second and third attempt and a wait of 30 minutes is required after the third start attempt.
  2. After three consecutive aborted start attempts, a fifteen minute cooling period is required ✓
  3. But 3 minutes cooling is required between subsequent attempts.
正确答案：After three consecutive aborted start attempts, a fifteen minute cooling period is required　·　737　·　来源 b737.org.uk

21.If the APU generator is providing electrical power to the aircraft while on the ground,

  1. The galley electrical loads will automatically be shed if the total electrical power requirements exceed design limits. ✓
  2. The galley electrical loads will automatically be shed if the total electrical power requirements exceed design limits on the B737-400 only.
  3. The galley electrical loads will not be automatically shed.
正确答案：The galley electrical loads will automatically be shed if the total electrical power requirements exceed design limits.　·　737　·　来源 b737.org.uk

22.Illumination of the APU DET INOP light

  1. Activates master caution "APU".
  2. Activates master caution "OVHT/DET". ✓
  3. Does not activate the master caution system.
正确答案：Activates master caution "OVHT/DET".　·　737　·　来源 b737.org.uk

23.APU bleed air

  1. Is not allowed to be used for wing anti-ice. ✓
  2. Is allowed to be used for wing anti-ice.
  3. Is allowed to be used for wing anti-ice on the ground only.
正确答案：Is not allowed to be used for wing anti-ice.　·　737　·　来源 b737.org.uk

24.737NG: When electrical load and air extraction raise the EGT above acceptable levels during engine starting,

  1. Is armed at all times.
  2. electrical load shedding occurs prior to reducing bleed air. ✓
  3. the ECU will automatically shutdown the APU.
正确答案：electrical load shedding occurs prior to reducing bleed air.　·　737　·　来源 b737.org.uk

25.The APU may be used as an electrical and pneumatic source simultaneously up to:

  1. 10 000 feet ✓
  2. 17 000 feet
  3. 25 000 feet
  4. 30 000 feet
正确答案：10 000 feet　·　MAX　·　来源 smartcockpit.com

26.Pulling up the APU fire warning switch:

  1. Discharges the APU fire extinguisher.
  2. Discharges the APU fire extinguisher and shuts down the APU.
  3. Discharges the APU fire extinguisher and closes the bleed air valve.
  4. Trips the generator control relay and breaker, arms the associated extinguisher and closes the bleed air valve, closes the fuel shutoff valve, and the APU inlet door. ✓
正确答案：Trips the generator control relay and breaker, arms the associated extinguisher and closes the bleed air valve, closes the fuel shutoff valve, and the APU inlet door.　·　MAX　·　来源 smartcockpit.com

27.It is recommennded to operate the APU for _____ before using it as a bleed air source.

  1. 20 seconds
  2. 30 seconds
  3. 45 seconds
  4. 1 full minute ✓
正确答案：1 full minute　·　MAX　·　来源 smartcockpit.com

28.THe APU will shutdown on the ground if:

  1. The battery switch is placed to OFF ✓
  2. The LOW OIL QUANTITY / MAINT light illuminates
  3. The fuel LOW PRESSURE lights in the main tank illuminate
  4. All statements are correct
正确答案：The battery switch is placed to OFF　·　MAX　·　来源 smartcockpit.com

29.If the APU GEN OFF BUS light fails to illuminate by the end of the start cycle:

  1. The FAULT light illuminates. ✓
  2. The MAINT light illuminates.
  3. The APU failed a self test and the OVERSPEED light will illuminate.
  4. There is no light associated wih this malfunction.
正确答案：The FAULT light illuminates.　·　MAX　·　来源 smartcockpit.com

30.The APU Electronics Control Unit (ECU) provides:

  1. Automatic shutdown protection for overspeed conditions, low oil pressure and high oil temperature
  2. Automatic shutdown protection for APU fire, fuel control unit failure and EGT exceedance
  3. Automatic control of APU speed through the electronic fuel unit
  4. All statements are correct. ✓
正确答案：All statements are correct.　·　MAX　·　来源 smartcockpit.com

31.The APU may be used as a pneumatic source up to:

  1. 10 000 feet.
  2. 17 000 feet. ✓
  3. 25 000 feet.
  4. 35 000 feet.
正确答案：17 000 feet.　·　MAX　·　来源 smartcockpit.com

32.The APU OIL QTY maintenance status message means:

  1. The oil quantity is low but there is sufficient oil for 30 to 50 hours of operation at the maximum oil consumption rate before a low oil pressure shutdown occurs. ✓
  2. The oil quantity is low but there is sufficient oil for 30 hours of operation at the maximum oil consumption rate before a low oil pressure shutdown occurs.
  3. The APU oil must be replenished before flight.
正确答案：The oil quantity is low but there is sufficient oil for 30 to 50 hours of operation at the maximum oil consumption rate before a low oil pressure shutdown occurs.　·　MAX　·　来源 smartcockpit.com

33.The APU start cycle may take up to:

  1. 60 seconds.
  2. 90 seconds.
  3. 120 seconds. ✓
  4. 180 seconds.
正确答案：120 seconds.　·　MAX　·　来源 smartcockpit.com

34.APU operation requires the following:

  1. APU fire switch on the overheat/fire panel must be IN
  2. APU fire control handle on the APU ground control panel must be IN
  3. Battery switch must be ON.
  4. All statements are correct. ✓
正确答案：All statements are correct.　·　MAX　·　来源 smartcockpit.com

35.The APU is capable of supplying bleed air for both air conditioning packs:

  1. On the ground only ✓
  2. In the air only.
  3. On the ground or in the air.
  4. Never.
正确答案：On the ground only　·　MAX　·　来源 smartcockpit.com

36.In flight, if the APU is the only source of electrical power, all galley busses are automatically shed. If electrical load still exceeds design limits, both main busses automatically shed until the load is within design limits. On the ground, the APU attempts to carry a full electrical load. If an overload condition is sensed, the APU sheds galley busses first, and then both main busses until the load is within limits.

  1. True. ✓
  2. False.
正确答案：True.　·　MAX　·　来源 smartcockpit.com

37.If the APU is the only source of electrical power:

  1. In flight, the galley busses are automatically shed. ✓
  2. In flight, the APU attempts to carry the full electrical load.
  3. On the ground, the galley busses are automatically shed.
  4. On the ground, the main busses are shed first if an overload condition is sensed.
正确答案：In flight, the galley busses are automatically shed.　·　MAX　·　来源 smartcockpit.com

38.Electrical power to start the APU comes from:

  1. The battery bus or the DC ground power receptacle
  2. Battery power or either AC transfer bus
  3. Either the AC or DC standby bus
  4. The No.1 Transfer bus if available. If AC power is not available, battery power is used ✓
正确答案：The No.1 Transfer bus if available. If AC power is not available, battery power is used　·　MAX　·　来源 smartcockpit.com

39.The APU switch OFF position has an automatic shutdown delay of:

  1. 30 seconds.
  2. 60 seconds. ✓
  3. 90 seconds.
  4. 120 seconds.
正确答案：60 seconds.　·　MAX　·　来源 smartcockpit.com

40.Of the four lights located on the APU control panel, which light will NOT cause an automatic shutdown of the APU when it illuminates?

  1. LOW OIL PRESSURE
  2. FAULT
  3. OVERSPEED
  4. DOOR ✓
正确答案：DOOR　·　MAX　·　来源 smartcockpit.com

41.Moving the battery switch to OFF automatically shuts down the APU.

  1. On ground only
  2. In the air only
  3. On the ground or in the air ✓
  4. Never
正确答案：On the ground or in the air　·　MAX　·　来源 smartcockpit.com

42.When the APU is started using battery power only, there is no indication on the electrical metering panel that the APU generator has come on line and is ready to be selected. Both the frequency and voltage readings are zero until the APU generator is placed on line.

  1. True. ✓
  2. False.
正确答案：True.　·　MAX　·　来源 smartcockpit.com

43.APU cooling air:

  1. Enters through the air inlet door
  2. Enters through the ram air system
  3. Enters through a cooling air inlet above the APU exhaust outlet
  4. Is supplied by the air conditioning packs. ✓
正确答案：Is supplied by the air conditioning packs.　·　MAX　·　来源 smartcockpit.com

44.The APU air inlet door:

  1. Is electronically controlled to move anywhere between fully closed (0 deg) and fully open (45deg) depending upon aircraft configuration.
  2. has two positions: Closed and Ground position (45deg).
  3. has three positions: Closed, Ground position (45deg) and Flight position (17deg). ✓
正确答案：has three positions: Closed, Ground position (45deg) and Flight position (17deg).　·　MAX　·　来源 smartcockpit.com

45.Illumination of the APU DOOR light indicates:

  1. The APU door is not in the commanded position. ✓
  2. The APU door is not in the commanded position and must be shut down.
  3. The APU door is not in the commanded position causing an automatic shutdown.
正确答案：The APU door is not in the commanded position.　·　MAX　·　来源 smartcockpit.com

46.The APU OVERSPEED light illuminates when:

  1. APU RPM limit has been exceeded resulting in an automatic shutdown
  2. The overspeed shutdown protection feature has failed a self-test during a normal APU shutdown
  3. All statements are correct. ✓
正确答案：All statements are correct.　·　MAX　·　来源 smartcockpit.com

47.During APU operation, fuel is automatically heated to prevent icing:

  1. True. ✓
  2. False.
正确答案：True.　·　MAX　·　来源 smartcockpit.com

48.The APU starts, operates and can supply electrical power alone up to:

  1. 41,000 feet. ✓
  2. 17,000 feet.
  3. 25,000 feet.
  4. 37,000 feet.
正确答案：41,000 feet.　·　MAX　·　来源 smartcockpit.com

49.When the APU is started using battery power only, there is a normal indication on the electrical metering panel that the APU generator has come on line and is ready to be selected.

  1. True.
  2. False. ✓
正确答案：False.　·　MAX　·　来源 smartcockpit.com

50.The APU can supply both transfer busses:

  1. On ground only.
  2. In the air only.
  3. On the ground or in the air. ✓
  4. Never.
正确答案：On the ground or in the air.　·　MAX　·　来源 smartcockpit.com

51.APU operation requires the following:

  1. APU fire switch on the overheat/fire panel must be IN
  2. APU fire control handle on the APU ground control panel must be IN
  3. Battery switch must be ON.
  4. All statements are correct. ✓
正确答案：All statements are correct.　·　NG　·　来源 smartcockpit.com

52.Of the four lights located on the APU control panel, which light will NOT cause an automatic shutdown of the APU when it illuminates?

  1. LOW OIL PRESSURE
  2. FAULT
  3. OVERSPEED
  4. MAINT ✓
正确答案：MAINT　·　NG　·　来源 smartcockpit.com

53.The APU Electronics Control Unit (ECU) provides:

  1. Automatic shutdown protection for overspeed conditions, low oil pressure and high oil temperature
  2. Automatic shutdown protection for APU fire, fuel control unit failure and EGT exceedance
  3. Automatic control of APU speed through the electronic fuel unit
  4. All statements are correct. ✓
正确答案：All statements are correct.　·　NG　·　来源 smartcockpit.com

54.The APU starts, operates and can supply electrical power alone up to:

  1. 41,000 feet. ✓
  2. 17,000 feet.
  3. 25,000 feet.
  4. 37,000 feet.
正确答案：41,000 feet.　·　NG　·　来源 smartcockpit.com

55.If the APU is the only source of electrical power:

  1. In flight, the galley busses are automatically shed. ✓
  2. In flight, the APU attempts to carry the full electrical load.
  3. On the ground, the galley busses are automatically shed.
  4. On the ground, the main busses are shed first if an overload condition is sensed.
正确答案：In flight, the galley busses are automatically shed.　·　NG　·　来源 smartcockpit.com

56.The APU is capable of supplying bleed air for both air conditioning packs:

  1. On the ground only ✓
  2. In the air only.
  3. On the ground or in the air.
  4. Never.
正确答案：On the ground only　·　NG　·　来源 smartcockpit.com

57.During the APU start cycle, the APU EGT indication may fluctuate from 0 deg.C to 1100 deg.C prior to normal EGT rise and the LOW OIL PRESSURE light may cycle on and off several times. These indications have no adverse effect on starting the APU. It is not necessary to monitor EGT during start.

  1. True. ✓
  2. False.
正确答案：True.　·　NG　·　来源 smartcockpit.com

58.The APU may be used as a pneumatic source up to:

  1. 10 000 feet.
  2. 17 000 feet. ✓
  3. 25 000 feet.
  4. 35 000 feet.
正确答案：17 000 feet.　·　NG　·　来源 smartcockpit.com

59.APU cooling air:

  1. Enters through the air inlet door
  2. Enters through the ram air system
  3. Enters through a cooling air inlet above the APU exhaust outlet
  4. Is supplied by the air conditioning packs. ✓
正确答案：Is supplied by the air conditioning packs.　·　NG　·　来源 smartcockpit.com

60.The APU may be used as an electrical and pneumatic source simultaneously up to:

  1. 10 000 feet ✓
  2. 17 000 feet
  3. 25 000 feet
  4. 30 000 feet
正确答案：10 000 feet　·　NG　·　来源 smartcockpit.com

61.In flight, if the APU is the only source of electrical power, all galley busses are automatically shed. If electrical load still exceeds design limits, both main busses automatically shed until the load is within design limits. On the ground, the APU attempts to carry a full electrical load. If an overload condition is sensed, the APU sheds galley busses first, and then both main busses until the load is within limits.

  1. True. ✓
  2. False.
正确答案：True.　·　NG　·　来源 smartcockpit.com

62.When the APU is started using battery power only, there is a normal indication on the electrical metering panel that the APU generator has come on line and is ready to be selected.

  1. True.
  2. False. ✓
正确答案：False.　·　NG　·　来源 smartcockpit.com

63.During APU operation, fuel is automatically heated to prevent icing:

  1. True. ✓
  2. False.
正确答案：True.　·　NG　·　来源 smartcockpit.com

64.The blue APU MAINT light means that:

  1. APU may be operated. ✓
  2. APU has shut down automatically.
  3. APU has to be shut down manually in flight or on ground.
  4. APU has to be shut down manually on ground only.
正确答案：APU may be operated.　·　NG　·　来源 smartcockpit.com

65.The APU start cycle may take up to:

  1. 60 seconds.
  2. 90 seconds.
  3. 120 seconds. ✓
  4. 180 seconds.
正确答案：120 seconds.　·　NG　·　来源 smartcockpit.com

66.It is recommennded to operate the APU for _____ before using it as a bleed air source.

  1. 20 seconds
  2. 30 seconds
  3. 45 seconds
  4. 1 full minute ✓
正确答案：1 full minute　·　NG　·　来源 smartcockpit.com

67.The APU can supply both transfer busses:

  1. On ground only.
  2. In the air only.
  3. On the ground or in the air. ✓
  4. Never.
正确答案：On the ground or in the air.　·　NG　·　来源 smartcockpit.com

68.If the APU GEN OFF BUS light fails to illuminate by the end of the start cycle:

  1. The FAULT light illuminates. ✓
  2. The MAINT light illuminates.
  3. The APU failed a self test and the OVERSPEED light will illuminate.
  4. There is no light associated wih this malfunction.
正确答案：The FAULT light illuminates.　·　NG　·　来源 smartcockpit.com

69.Electrical power to start the APU comes from:

  1. The battery bus or the DC ground power receptacle
  2. Battery power or either AC transfer bus
  3. Either the AC or DC standby bus
  4. The No.1 Transfer bus if available. If AC power is not available, battery power is used ✓
正确答案：The No.1 Transfer bus if available. If AC power is not available, battery power is used　·　NG　·　来源 smartcockpit.com

70.The APU switch OFF position has an automatic shutdown delay of:

  1. 30 seconds.
  2. 60 seconds. ✓
  3. 90 seconds.
  4. 120 seconds.
正确答案：60 seconds.　·　NG　·　来源 smartcockpit.com

71.Pulling up the APU fire warning switch:

  1. Discharges the APU fire extinguisher.
  2. Discharges the APU fire extinguisher and shuts down the APU.
  3. Discharges the APU fire extinguisher and closes the bleed air valve.
  4. Trips the generator control relay and breaker, arms the associated extinguisher and closes the bleed air valve, closes the fuel shutoff valve, and the APU inlet door. ✓
正确答案：Trips the generator control relay and breaker, arms the associated extinguisher and closes the bleed air valve, closes the fuel shutoff valve, and the APU inlet door.　·　NG　·　来源 smartcockpit.com

72.THe APU will shutdown on the ground if:

  1. The battery switch is placed to OFF ✓
  2. The LOW OIL QUANTITY / MAINT light illuminates
  3. The fuel LOW PRESSURE lights in the main tank illuminate
  4. All statements are correct
正确答案：The battery switch is placed to OFF　·　NG　·　来源 smartcockpit.com

73.Moving the battery switch to OFF automatically shuts down the APU.

  1. On ground only
  2. In the air only
  3. On the ground or in the air ✓
  4. Never
正确答案：On the ground or in the air　·　NG　·　来源 smartcockpit.com

74.The APU OVERSPEED light illuminates when:

  1. APU RPM limit has been exceeded resulting in an automatic shutdown
  2. The overspeed shutdown protection feature has failed a self-test during a normal APU shutdown
  3. All statements are correct. ✓
正确答案：All statements are correct.　·　NG　·　来源 smartcockpit.com

75.When the APU is started using battery power only, there is no indication on the electrical metering panel that the APU generator has come on line and is ready to be selected. Both the frequency and voltage readings are zero until the APU generator is placed on line.

  1. True. ✓
  2. False.
正确答案：True.　·　NG　·　来源 smartcockpit.com

76.As well as using the DISCH switch on the Fire Protection panel in the flight deck, an APU fire can be extinguished by discharging the APU fire extinguisher using the APU Ground Control Panel, which is located in a quick release access panel immediately forward and below the APU.

  1. True
  2. False ✓
正确答案：False　·　NG　·　来源 Chair Flight B737 Question Bank

77.The engines and APU have fire extinguishing systems, but the cargo holds and wheel well have only suppression systems.

  1. True
  2. False ✓
正确答案：False　·　NG　·　来源 Chair Flight B737 Question Bank

78.The engines have both Overheat and Fire warnings, the APU, cargo holds and wheel well have ONLY Fire warnings.

  1. True ✓
  2. False
正确答案：True　·　NG　·　来源 Chair Flight B737 Question Bank

79.What condition would cause an automatic shutdown of the APU?

  1. An APU high oil temperature condition occurs or The APU overspeeds or APU fuel control unit failure. ✓
  2. An APU high oil temperature condition occurs or The APU overspeeds.
  3. The APU overspeeds or APU fuel control unit failure
  4. The APU has no automatic shutdown protection - shutting down the APU is always Flight Crew initiated.
正确答案：An APU high oil temperature condition occurs or The APU overspeeds or APU fuel control unit failure.　·　NG　·　来源 Chair Flight B737 Question Bank

80.The APU can operate and supply bleed air only, up to the aircraft operating ceiling of 41, 000 feet.

  1. True
  2. False ✓
正确答案：False　·　NG　·　来源 Chair Flight B737 Question Bank

81.With the APU running, how can it be stopped immediately?

  1. Move the APU START switch to OFF.
  2. Rotate APU FIRE switch
  3. Switch the battery off. ✓
  4. All of the above.
正确答案：Switch the battery off.　·　NG　·　来源 Chair Flight B737 Question Bank

82.The APU engine air inlet door is located at the rear of the fuselage just below and forward of the left horizontal stabiliser.

  1. True
  2. False ✓
正确答案：False　·　NG　·　来源 Chair Flight B737 Question Bank

83.The APU requires an AC power supply for starting.

  1. True
  2. False ✓
正确答案：False　·　NG　·　来源 Chair Flight B737 Question Bank

84.APU cooling air enters along with APU engine air through the APU intake located on the right rear fuselage.

  1. True
  2. False ✓
正确答案：False　·　NG　·　来源 Chair Flight B737 Question Bank

85.If the APU is powering Transfer Bus 1 and GEN 2 is powering Transfer Bus 2, what will occur when the Ground Power (GRD PWR) Switch is turned to ON?

  1. Ground Power will power Transfer Bus 1 and GEN 2 will power Transfer Bus 2.
  2. Ground Power will power both Transfer Busses and the SOURCE OFF lights will illuminate.
  3. Ground Power will power both Transfer Busses. The SOURCE OFF lights will remain extinguished. ✓
  4. The APU will power Transfer Bus 1 and Ground Power will power Transfer Bus 2.
正确答案：Ground Power will power both Transfer Busses. The SOURCE OFF lights will remain extinguished.　·　NG　·　来源 Chair Flight B737 Question Bank

86.If Ground power is powering both Transfer Busses, the APU is available, and is selected to power Transfer Bus 1, which statement is correct?

  1. Ground power will be automatically disconnected and the APU will power both Transfer Busses. ✓
  2. Ground power will be automatically disconnected and the APU will power Transfer Bus 1. Transfer Bus 2 is unpowered.
  3. The APU will power Transfer Bus 1 and Ground power will power Transfer Bus 2
  4. Ground power will continue to power the Transfer Busses until the APU is selected to power both Transfer Busses.
正确答案：Ground power will be automatically disconnected and the APU will power both Transfer Busses.　·　NG　·　来源 Chair Flight B737 Question Bank
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