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5J A330 TKE 2023 > Electrical > Flashcards

Electrical Flashcards

1
Q

Electrical Contractor Management Unit (ECMU) function is:

a. control of AC and DC bus ties

b. TR contractors monitoring

c. automatic management and monitoring

A

c. automatic management and monitoring

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2
Q

Loss of one generator or TR:

a. results in the loss of the corresponding AC or DC bus

b. has no effect on flight management

c. requires to have the APU generator operational

A

b. has no effect on flight management

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3
Q

The minimum number of generators required to supply all the network (in a non-overload condition) is

a. one engine generator

b. one engine generator and the EMER generator

c. two generators

A

a. one engine generator

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4
Q

The emergency generator is powered by:

a. a Ram Air Turbine

b. the Static Inverter

c. the green hydraulic system when pressurized by engine 1 or 2 driven hydraulic pump or by Ram Air Turbine

A

c. the green hydraulic system when pressurized by engine 1 or 2 driven hydraulic pump or by Ram Air Turbine

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5
Q

An engine generator is driven:

a. at a ratio of 5:1 to engine speed

b. direct from the accessory gear box

c. by an Integrated Drive Generator (IDG)

A

c. by an Integrated Drive Generator (IDG)

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6
Q

Each engine generator supplies power to:

a. its assigned AC BUS in normal operation

b. the opposite side AC BUS in normal operation

c. only its assigned BUS in all cases

A

a. its assigned AC BUS in normal operation

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7
Q

The APU battery:

a. is dedicated to APU start only

b. may be used for Engine Start when the APU is not available

c. can be used as a backup for Battery One or Battery Two

A

a. is dedicated to APU start only

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8
Q

Normally which AC BUS supplies the ESS TR?

a. AC BUS 1

b. AC BUS 2

c. AC ESS BUS

A

a. AC BUS 1

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9
Q

When the Battery selector is in the #2 position, which of the following is true?

a. BAT 2 has been selected to start the APU

b. BAT 2 voltage can now be read in the voltage indicator window

c. APU BAT voltage can now be read in the voltage indicator window

A

b. BAT 2 voltage can now be read in the voltage indicator window

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10
Q

In flight, APU not running, an engine generator has failed, which source is supplying the the corresponding AC BUS?

a. the Static Inverter

b. the AC BUS is lost

c. the other side engine generator

A

c. the other side engine generator

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11
Q

Two Electrical Contactor Management Unit (ECMU) provide:

a. control of TR contactors

b. AC and DC contactors control and monitoring except for TR contractors

c. AC and DC contactors control and monitoring except for TRs which have their own control, gallery shedding and no break power transfer

A

c. AC and DC contactors control and monitoring except for TRs which have their own control, gallery shedding and no break power transfer

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12
Q

The ESS TR s normally supplied by which BUS?

a. AC ESS BUS

b. AC BUS 1

c. AC BUS 2

A

b. AC BUS 1

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13
Q

When TR 1 is lost, due to unpowered AC BUS 1:

a. there is no degradation in the capability of the DC system

b. the APU BAT BUS is discharging at a rate of 2 amperes

c. the Static Inverter is being powered because TR 1 is not powered

A

a. there is no degradation in the capability of the DC system

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14
Q
  1. When the C/B ECAM page shows NORMAL in green, it indicates:

a. there are no C/Bs tripped or pulled

b. electric supply to C/Bs is normal

c. no fault detected in the Electronic Equipment Bay

A

a. there are no C/Bs tripped or pulled

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15
Q
  1. The last C/B tripped is displayed (ECAM C/B page):

a. on top of the tripped C/B list

b. on the last tripped C/B list

c. not shown

A

a. on top of the tripped C/B list

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16
Q
  1. When the C/B ECAM page shows NOT AVAIL in amber, it indicates:

a. the C/B ECAM page is not selectable

b. requested C/Bs are not monitored by the CBMU

c. data from the CBMU are not monitored by the CBMU

A

c. data from the CBMU are not monitored by the CBMU

17
Q
  1. During EMER GEN automatic start up sequence:

a. the MAN ON pb must be pushed to extinguish red FAULT light on the EMER ELEC CTRL PANEL

b. it is not recommended to push the MAN ON pb to confirm EMER ELEC config on the EMER ELEC PANEL

c. the RED FAULT light on EMER ELEC PANEL will remain ON until the EMER GEN reaches its nominal output

A

c. the RED FAULT light on EMER ELEC PANEL will remain ON until the EMER GEN reaches its nominal output

18
Q
  1. The EMER GEN is being powered by a hydraulic system pressurized by an engine driven hydraulic pump. Pressing the LAND RECOVERY push button switch will:

a. operate when the gear is extended

b. normally recover the AC and DC LAND RECOVERY BUSES and the DC SHED LAND RECOVERY BUS. This will power some components for approach and landing

c. energize the landing gear

A

b. normally recover the AC and DC LAND RECOVERY BUSES and the DC SHED LAND RECOVERY BUS. This will power some components for approach and landing

19
Q
  1. The main function of the MAINT BUS SWITCH is:

a. to power the AC and DC systems when the aircraft is on the ground

b. to allow selected ground services equipment to be powered without powering the entire aircraft electrical system.

c. to allow EXT power to supply AC and DC essential busses and their respective shed buses

A

b. to allow selected ground services equipment to be powered without powering the entire aircraft electrical system.

20
Q
  1. When the MAINT BUS SWITCH is ON:

a. the electric network supply is limited to Ground Service items

b. the DC busses are powered only

c. it is for the purpose of operating the cargo door only

A

a. the electric network supply is limited to Ground Service items

21
Q
  1. The MAINT BUS SWITCH is located:

a. on the overhead systems panel in the cockpit

b. overhead, before entry of the cockpit door

c. on the Purser’s Control Panel in the FWD cabin

A

b. overhead, before entry of the cockpit door

22
Q

When ECAM shows ELEC ECMU 1 FAULT amber message (ECMU = Electrical Contractor Management Unit):

a. ECMU 1 controls Generator Line Contractor (GLC) 2; you should reset generator 2

b. ECMU 1 controls GLC 1 and you should not reset the corresponding generator

c. ECMU 1 controls GLC 1 and you should try to reset the corresponding generator

A

b. ECMU 1 controls GLC 1 and you should not reset the corresponding generator

23
Q
  1. A MASTER CAUTION light with a single chime and the following ECAM memo ELEC GEN 2 FAULT illuminate amber, this means that:

a. an ECMU fault

b. a TR overload

c. a generator fault

A

c. a generator fault

24
Q
  1. The FAULT light of the GALLEY pb switch will illuminate amber when:

a. galley circuits are shed

b. an overload is detected and the automatic shedding is not operating

c. the automatic shedding, manual override and overload detection are not operating

A

b. an overload is detected and the automatic shedding is not operating

25
Q

ECAM message ELEC BAT 1 FAULT is shown on the ECAM. The fault was triggered because:

a. charging current increasing at an abnormal rate

b. abnormal voltage

c. the BAT 1 pb is set to OFF

A

a. charging current increasing at an abnormal rate

26
Q

ECAM message ELEC DC BUS 2 FAULT means:

a. a faulty TR

b. the normal connection between DC BAT BUS and DC BUS 2 has been broken

c. DC BUS 2 is not powered

A

c. DC BUS 2 is not powered

27
Q

The IDG switch on the ELEC control panel is used:

a. to disconnect the generator

b. to disconnect the generator and open the GCU

c. to disconnect the IDG from the accessory gear box

A

c. to disconnect the IDG from the accessory gear box

5J A330 TKE 2023 (18 decks)

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