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TKE-P > AUXILIARY POWER UNIT (APU) > Flashcards

AUXILIARY POWER UNIT (APU) Flashcards

1
Q

When the APU master switch is released, a normal APU shutdown occurs:

a. without delay, in all cases
b. with a delay, in all cases
c. with a delay if the bleed air was in use
d. b and c are correct

A

c. with a delay if the bleed air was in use

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2
Q
  1. What are the APU manual shut down possibilities in the cockpit?

a. APU master switch pb
APU fire pb switch

b. APU master switch pb

c. APU fire pb switch
APU shut off pb

A

a. APU master switch pb

APU fire pb switch

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3
Q
  1. Normal electrical system being available, you may restart the APU up to:
    a. 31, 000 ft
    b. 20, 000 ft
    c. 41, 000 ft
A

c. 41, 000 ft

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4
Q
  1. When the APU is running, the APU fuel pump:
    a. runs when tank pumps pressure is not sufficient
    b. runs all the time
    c. runs only in flight
    d. runs when the APU fuel pump is selected ON
A

a. runs when tank pumps pressure is not sufficient

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5
Q
  1. Normal APU rotation speed (N%) is:
    a. 100%
    b. steady at 99%
    c. steady at101%
A

a. 100%

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6
Q
  1. APU Master Switch selected ON:
    a. ON illuminates blue. APU system is supplied and APU starts at 95%, AVAIL comes on.

b. ON illuminates blue. APU system is supplied. APU starts as soon as start pb is
depressed and intake flap completely open

A

b. ON illuminates blue. APU system is supplied. APU starts as soon as start pb is
depressed and intake flap completely open

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7
Q
  1. APU bleed air is controlled:
    a. by ECB
    b. not controlled
    c. by APU bleed valve which operates as shut off valve
A

a. by ECB

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8
Q
  1. APU N indication becomes amber on ECAM SD, when:
    a. N ≥107%
    b. N ≥102%
    c. N ≥ 99%
A

b. N ≥102%

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9
Q
  1. APU EGT indication becomes RED on ECAM SD, when:
    a. EGT ≥ 1090°C and 675°C (start and running)
    b. EGT ≥ 982°C and 700°C-742°C (start and running)
    c. a and b are correct
A

a. EGT ≥ 1090°C and 675°C (start and running)

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10
Q
  1. On Ground, APU provides:
    a. electric power + hydraulic power
    b. electric power + bleed air
A

b. electric power + bleed air

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11
Q
  1. Air bleed extraction for Wing Anti-Ice:
    a. is permitted
    b. is not permitted
A

b. is not permitted

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12
Q
  1. Can you start the APU using the A/C batteries:
    a. Yes
    b. No
A

a. Yes

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13
Q
  1. The APU is supplied from the:
    a. left fuel feed line
    b. right fuel feed line
A

a. left fuel feed line

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14
Q
  1. If Air bleed was used, after a manual shut down sequence the APU:
    a. stops immediately
    b. keeps running for four minutes
    c. keeps running for a cooling period of 60 sec.
A

c. keeps running for a cooling period of 60 sec.

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15
Q
  1. AVAIL light illuminates on the Start pb when:
    a. external power is disconnected
    b. APU N reaches above 99.5% or 2 sec after N reaches 95%
    c. APU electric power is used
A

b. APU N reaches above 99.5% or 2 sec after N reaches 95%

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16
Q
  1. The APU has its own lubrication system:
    a. yes
    b. no
A

a. yes

17
Q
  1. What determines the APU speed in accordance with air bleed demand:
    a. electronic control box
    b. air conditioning system
    c. air intake system
A

a. electronic control box

18
Q
  1. Besides the master switch on the cockpit APU panel, APU shutdown is possible by:
    a. switching off the left fuel pump
    b. pushing the APU fire push button
    c. pressing APU shut off pb on external Interphone Panel under the nose fuselage
    d. either b or c
A

d. either b or c

19
Q
  1. The supply of electrical power has priority over bleed air supply:
    a. no
    b. yes
    c. sometimes
A

b. yes

20
Q
  1. Master switch ON, the:
    a. APU starts
    b. ECB is electrically supplied
    c. Air intake flap closes
A

b. ECB is electrically supplied

21
Q
  1. On ground normal APU rotation speed (N%) without air conditioning is:
    a. 100%
    b. steady at 99%
    c. steady at 101%
A

a. 100%

TKE-P (17 decks)

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