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Q400 SV > APU > Flashcards

APU Flashcards

1
Q

T or F: the APU can be used during flight.

A

False.

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2
Q

T or F: 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 side.

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4
Q

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

A

Both GEN and BLEEDs selected.

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5
Q

When will the fuel shutoff valve automatically close on the APU?

A

PWR switchlight is pushed off, fire is detected in tailcone, EXTG switchlight is pushed, airplane is in flight.

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6
Q

The APU is started with ____.

A

Airplane batteries or external power.

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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

Opens the APU shutoff valve and supplies fuel to the APU.

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8
Q

T or F: the APU cannot be used as a source of bleed air on the ground.

A

False.

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9
Q

T or F: APU bleed air can operated in conjunction with engine bleed air.

A

False.

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10
Q

T or F: APU bleed air cannot operate in conjunction with engine bleed air.

A

True.

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11
Q

T or F: the APU can be used while the aircraft is airborne.

A

False.

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12
Q

T or F: the APU can be used on the ground for electrical, pneumatic, and hydraulic power.

A

False. It only supplies DC power and bleed air.

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13
Q

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

A

Verify the green APU FUEL VALVE OPEN advisory light illuminates, then press the START switchlight.

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14
Q

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

A

28V DC.

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15
Q

Where can the APU’s electrical load be monitored?

A

MFD electrical page.

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16
Q

T or F: once the APU is at normal operating speed, APU bleed air is automatically supplied with no pilot input.

A

False, the pilot must push the BLEED AIR switchlight.

17
Q

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

A

Green.

18
Q

T or F: 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 GEN switchlight, WARN advisory light illuminates.

20
Q

Fuel for APU operation is supplied from which fuel tank?

A

Left.

21
Q

What does the APU GEN WARN light indicate?

A

The APU is running, but the generator is offline or a fault has occurred in the APU generator.

22
Q

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

A

White.

Q400 SV (24 decks)

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