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Q400 > APU > Flashcards

APU Flashcards

1
Q

True or False: The APU can be used during flight.

A

False

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2
Q

True or False: The APU can only be used on the ground.

A

True

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3
Q

On which side of the fuselage is the APU air intake located?

A

Right Rear Fuselage

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4
Q

Which of the following combinations causes the highest fuel burn while operating the APU?

A

Generator and Bleed Air selected on

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5
Q

When will the fuel shutoff valve automatically close on the APU? (5)

A

Power Switch is Off

Fire detected in Tailcone

Extinguishing switch is pushed

GEN Overheat

Airplane is in flight

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6
Q

The APU is started _____.

A

Electrically

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7
Q

Pressing the PWR switchlight on the APU control panel, in preparation for APU start, does which of the following?

A

Arms the APU start circuits and opens the APU fuel shutoff valve.

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8
Q

True or False: The APU cannot be used as a source of bleed air.

A

False

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9
Q

True or False: APU bleed air can operate in conjunction with engine bleed air.

A

False

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10
Q

True or False: APU bleed air cannot operate in conjunction with engine bleed air.

A

True

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11
Q

True or False: The APU can be used while the aircraft is airborne.

A

False

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12
Q

True or False: The APU can be used on the ground for electrical, pneumatic, and hydraulic power.

A

False

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13
Q

When ready to start the APU, what should be accomplished after pressing the PWR switchlight?

A

Push the start button

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14
Q

The green ON light illuminates on the GEN switchlight when the APU is running at full speed and can supply which of the following?

A

28 Volt DC Power

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15
Q

Where can the APU’s electrical load be monitored?

A

MFD

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16
Q

True or False: Once the APU is at normal operating speed, APU bleed air is automatically supplied with no pilot input.

A

False

17
Q

What color is the light that illuminates when the Fuel Valve is open to the APU?

A

Green

18
Q

True or False: If the APU generator overheats, the APU will automatically shut down.

A

True

19
Q

What will happen if an APU generator fault is detected?

A

Electrical power to the Starter / Generator is removed, On light extinguishes from the GEN Switch when advisory light illuminates.

20
Q

Fuel for APU operation is supplied form which fuel tank?

A

Left

21
Q

What does the APU Gen WARN light indicate?

A
  • GEN not selected, but APU is running
  • GEN selected, but does not come online
  • GEN is taken offline
22
Q

What is the color of the light that illuminates when the APU fuel valve is closed?

A

White

Q400 (31 decks)

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