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ELECTRICAL SYSTEM

ELECTRICAL SYSTEM
39問 • 1年前
  • Angelo Ortiz
  • 通報

    問題一覧

  • 1

    In normal configuration, How is DC ESS BUS supplied?

    from TR1

  • 2

    What happens in case of total loss of main generators?

    the RAT is automatically extended and powers the blue system which drives the emergency generators

  • 3

    AC ESS Bus is normally supplied by?

    AC BUS 1

  • 4

    DC BAT BUS can be supplied by:

    DC bus 1, DC bus 2 or batteries

  • 5

    AC BUS TIE contactors enable the electrical system:

    to be supplied by any generator or external power

  • 6

    What happens during the EMER GEN test?

    if the blue system is pressurized, the emergency generator comes on line

  • 7

    Normal minimum battery voltage before APU start is:

    25.5 V

  • 8

    When disconnecting the IDG, the button should be pressed:

    for no more than 3 secs.

  • 9

    On the EMER ELEC PWR panel, a red FAULT light illuminates under the “RAT and EMER GEN” label. What does it mean?

    emergency generator is not supplying when AC bus 1 and 2 are not powered

  • 10

    What happens when the GEN 1 LINE pb is set to OFF?

    AC BUS 1 is powered by the GEN 2 because the GEN 1 line contactor is opened

  • 11

    In cold aircraft configuration (no AC and no DC supply), where the batteries voltage can be checked?

    on the ELEC overhead panel

  • 12

    AC ESS BUS is normally supplied by:

    AC BUS 1

  • 13

    IN flight, On Batteries Only, the AC ESS SHED BUS and the DC ESS SHED BUS are lost:

    Yes

  • 14

    The static inverter works:

    when A/C is in flight and on batteries only

  • 15

    On ground, what happens when the “RAT and EMER GEN MAN ON P/B” is pressed in:

    the RAT is extended

  • 16

    The static inverter transforms the DC voltage from the battery bus into:

    single phase 115 V – 400 HZ AC current

  • 17

    In flight, in case of loss of all main generators, emergency generator not running, the static inverter supplies:

    APU and ENG start + AC ESS bus

  • 18

    The external power has priority over the APU GEN:

    Yes

  • 19

    GEN 1 and GEN 2, when operating, have priority over APU GEN:

    Yes

  • 20

    With APU available, if one generator fails, the failed generator is replaced by:

    the APU

  • 21

    The ESS TR may be used to replace a faulty TR:

    Yes

  • 22

    In flight, in case of loss of all generators, emergency generator not running, the DC ESS bus is supplied by:

    BAT 2

  • 23

    In flight, in case of loss of all main generators, emergency generator running, the DC ESS BUS is supplied by:

    ESS TR

  • 24

    The IDG regulates the generator:

    speed

  • 25

    Generators are sometimes connected in parallel:

    No

  • 26

    If AC bus 1 fails the AC ESS BUS is supplied by the:

    AC bus 2

  • 27

    In case of total electrical loss the AC ESS BUS is supplied by:

    static inverter

  • 28

    In emergency configuration, AC ESS SHED BUS is automatically:

    shed if the RAT stalls

  • 29

    Only one generator is operating in flight:

    main galley is automatically shed

  • 30

    Can you reconnect the IDG in flight?

    No

  • 31

    When GEN 1 or GEN 2 is selected off:

    the GEN is deenergized and line contactor is open

  • 32

    When the EXT PWR pb green AVAIL lite is illuminated, this means that:

    the EXT PWR is connected to the A/C

  • 33

    When are the batteries supplying the DC BAT BUS:

    Both (APU starting ) and (loss of AC bus 1+2 (speed < 100 kts) )

  • 34

    When you want to check battery voltage, you must set the BAT pb to:

    off position

  • 35

    The battery FAULT light illuminates when:

    charging current increases at an abnormal rate

  • 36

    In certain cases, the static inverter is supplied by:

    BAT 1

  • 37

    BUS TIE contactors when closed enable AC BUS 1 and 2:

    to be supplied by anyone of the main generators or external power

  • 38

    In case of the TR (1 or 2) failure, does the ESS TR supply the DC ESS BUS:

    Yes

  • 39

    The green EXT PWR pb AVAIL light is ON what does it mean?

    the EXT power is plugged in, and parameters are normal

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    問題一覧

  • 1

    In normal configuration, How is DC ESS BUS supplied?

    from TR1

  • 2

    What happens in case of total loss of main generators?

    the RAT is automatically extended and powers the blue system which drives the emergency generators

  • 3

    AC ESS Bus is normally supplied by?

    AC BUS 1

  • 4

    DC BAT BUS can be supplied by:

    DC bus 1, DC bus 2 or batteries

  • 5

    AC BUS TIE contactors enable the electrical system:

    to be supplied by any generator or external power

  • 6

    What happens during the EMER GEN test?

    if the blue system is pressurized, the emergency generator comes on line

  • 7

    Normal minimum battery voltage before APU start is:

    25.5 V

  • 8

    When disconnecting the IDG, the button should be pressed:

    for no more than 3 secs.

  • 9

    On the EMER ELEC PWR panel, a red FAULT light illuminates under the “RAT and EMER GEN” label. What does it mean?

    emergency generator is not supplying when AC bus 1 and 2 are not powered

  • 10

    What happens when the GEN 1 LINE pb is set to OFF?

    AC BUS 1 is powered by the GEN 2 because the GEN 1 line contactor is opened

  • 11

    In cold aircraft configuration (no AC and no DC supply), where the batteries voltage can be checked?

    on the ELEC overhead panel

  • 12

    AC ESS BUS is normally supplied by:

    AC BUS 1

  • 13

    IN flight, On Batteries Only, the AC ESS SHED BUS and the DC ESS SHED BUS are lost:

    Yes

  • 14

    The static inverter works:

    when A/C is in flight and on batteries only

  • 15

    On ground, what happens when the “RAT and EMER GEN MAN ON P/B” is pressed in:

    the RAT is extended

  • 16

    The static inverter transforms the DC voltage from the battery bus into:

    single phase 115 V – 400 HZ AC current

  • 17

    In flight, in case of loss of all main generators, emergency generator not running, the static inverter supplies:

    APU and ENG start + AC ESS bus

  • 18

    The external power has priority over the APU GEN:

    Yes

  • 19

    GEN 1 and GEN 2, when operating, have priority over APU GEN:

    Yes

  • 20

    With APU available, if one generator fails, the failed generator is replaced by:

    the APU

  • 21

    The ESS TR may be used to replace a faulty TR:

    Yes

  • 22

    In flight, in case of loss of all generators, emergency generator not running, the DC ESS bus is supplied by:

    BAT 2

  • 23

    In flight, in case of loss of all main generators, emergency generator running, the DC ESS BUS is supplied by:

    ESS TR

  • 24

    The IDG regulates the generator:

    speed

  • 25

    Generators are sometimes connected in parallel:

    No

  • 26

    If AC bus 1 fails the AC ESS BUS is supplied by the:

    AC bus 2

  • 27

    In case of total electrical loss the AC ESS BUS is supplied by:

    static inverter

  • 28

    In emergency configuration, AC ESS SHED BUS is automatically:

    shed if the RAT stalls

  • 29

    Only one generator is operating in flight:

    main galley is automatically shed

  • 30

    Can you reconnect the IDG in flight?

    No

  • 31

    When GEN 1 or GEN 2 is selected off:

    the GEN is deenergized and line contactor is open

  • 32

    When the EXT PWR pb green AVAIL lite is illuminated, this means that:

    the EXT PWR is connected to the A/C

  • 33

    When are the batteries supplying the DC BAT BUS:

    Both (APU starting ) and (loss of AC bus 1+2 (speed < 100 kts) )

  • 34

    When you want to check battery voltage, you must set the BAT pb to:

    off position

  • 35

    The battery FAULT light illuminates when:

    charging current increases at an abnormal rate

  • 36

    In certain cases, the static inverter is supplied by:

    BAT 1

  • 37

    BUS TIE contactors when closed enable AC BUS 1 and 2:

    to be supplied by anyone of the main generators or external power

  • 38

    In case of the TR (1 or 2) failure, does the ESS TR supply the DC ESS BUS:

    Yes

  • 39

    The green EXT PWR pb AVAIL light is ON what does it mean?

    the EXT power is plugged in, and parameters are normal