Airbus A340 - Electrical Power - SmartCockpit - Airline training guides, Aviation, Operations, Safety

The Emergency generator is powered by:

The Static Inverter.

The GREEN hydraulic system when pressurized by engine 1 or 4 driven hydraulic pump or by a Ram Air Turbine.

A Ram Air Turbine (RAT).

Correct! Wrong!

When the MAINT BUS switch is on:

Only the DC buses are powered.

The electric network supply is limited to Ground Service items.

It is for the purpose of operating the cargo door only.

Correct! Wrong!

According to this ECAM ELEC page:

APU GEN pb is set to Off.

APU is not running.

APU GEN is failed.

Correct! Wrong!

The MAINT BUS switch is located:

On the overhead system panel in the cockpit.

On the Purser's Control Panel in the FWD cabin.

On the FWD Circuit Breaker Panel behind the cockpit.

Correct! Wrong!

One function of the Electrical Contactor Management Units (ECMU) is:

Control of AC and DC bus ties, except TR contactor.

TR contactors monitoring.

Automatic management of contactors.

Correct! Wrong!

Loss of one generator or TR (except, if lost is due to over current detection) provides:

No effects on flight management.

Loss of the corresponding AC or DC bus.

APU generator required operational.

Correct! Wrong!

According to this ECAM ELEC page:

BAT1 and BAT2 are faulty.

BAT1 and BAT2 are supplying the DC network and discharge current is 40 A.

BAT1 and BAT2 are not connected to the DC network.

Correct! Wrong!

What is the meaning of this ECAM?

BAT 2 is faulty.

DC 2 BUS is not powered due to a short circuit.

TR 2 is faulty.

Correct! Wrong!

According to this ECAM ELEC DC page:

The BAT 2 is discharging at a rate of 4 A.

There is no degradation in the capability of DC system.

The Static Inverter is being powered because TR 1 is not powered.

Correct! Wrong!

According to these indications:

EXT POWER is being plugged and available for use when started.

EXT POWER is plugged, but is not available.

EXT POWER is not plugged and APU GEN is connected.

Correct! Wrong!

Each engine generator supplies power to:

Its assigned AC BUS in normal operation.

The BUS on the opposite side in normal operation.

Only its assigned BUS in all cases.

Correct! Wrong!

The EMER GEN is powered by a hydraulic system pressurized by an engine driven hydraulic pump. Pressing the LAND RECOVERY p/b switch will:

Normally recover the AC and DC LAND RECOVERY BUSES and the components for approach and landing.

Supply the landing gear.

Operate when the gear is extended.

Correct! Wrong!

Two Electrical Contactor Management Units (ECMU) provide:

Control AC and DC contactors (except for TR contactors).

Control of TR contactors.

Control and monitoring AC and DC contactors (except TR which have their own control), galley shedding and no break power transfer.

Correct! Wrong!

On C/B ECAM page, the pilot reads "NORMAL". What does it mean?

Electric supply to CB is normal.

No fault detected in Electronics Equipment Bay.

There are no CB tripped or pulled.

Correct! Wrong!

With APU GEN and external powers supplying the network:

APU is supplying left side, external power A is supplying the right side.

APU supplies AC 1-1 and AC 1-2 only.

APU supplies AC ESS only.

Correct! Wrong!

What is the meaning of this ECAM?

Abnormal voltage.

Battery line contactor inoperative.

Charging current BAT1 increasing at abnormal rate.

Correct! Wrong!

The minimum number of generators required to supply the whole network is:

One engine generator.

One engine generator and the EMER GEN.

Two engine generators.

Correct! Wrong!

As shown on this ECAM ELEC page, which BUS is normally supplying the ESS TR?

AC 2-4.

AC 1-1.

AC ESS BUS.

Correct! Wrong!

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

The other side outer engine generator.

The other generator on the same side as the failed generator.

Corresponding AC BUS is not powered. APU must be started to recover AC BUS.

Correct! Wrong!

An engine generator is driven:

At a ratio of 5 to engine speed.

By an Integrated Drive Generator (IDG).

Direct from the Accessory Gear Box (AGB).

Correct! Wrong!

The main function of the MAINT BUS switch is:

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

To allow selected ground equipment to be powered without powering the entire electric system.

To allow EXT PWR to supply AC and DC ESS buses and their respective shed buses.

Correct! Wrong!

What is the meaning of this ECAM?

There is a TR overload.

There is an ECMU fault.

There is an engine generator fault.

Correct! Wrong!

The TR 2 pb is set to OFF

The TR 2 is faulty, DC 2 BUS is powered by TR 1 through DC 1 and DC BAT BUS.

The TR 2 is faulty, then the DC 2 BUS is unpowered.

Correct! Wrong!

When ECAM shows "ELEC ECMU 1 FAULT":

ECMU 1 controls GLC 1 and 2 and you should not reset corresponding generators.

ECMU 1 controls Generator Line Contactors (GLC 3 and 4) and you should reset generator 3 and 4.

ECMU 1 controls GLC 1 and 2 and you should try to reset corresponding generators.

Correct! Wrong!

This ECAM ELEC page shows:

GEN 4 pb is set to Off and engine 4 is running.

GEN 4 pb is set to On and engine 4 is running.

GEN 4 pb is set to Off and engine 4 is not running.

Correct! Wrong!

The APU battery:

Can be used as a backup for BAT 1 or BAT 2.

May be used for engine start when the APU is not available.

Is dedicated to APU start only.

Correct! Wrong!

According to these indications which AC BUS supplies the ESS TR?

AC 1-1 BUS.

AC 1-2 BUS.

AC ESS.

Correct! Wrong!

During EMER GEN automatic start up sequence:

It is not recommended to push the MAN ON p/b to confirm EMER ELEC CONFIG on the EMER ELEC PWR Panel.

Red fault light on EMER ELEC PWR Panel will remain on until the EMER GEN reaches its normal output.

The MAN ON p/b must be pushed to extinguish red fault light on the EMER ELEC PWR Panel.

Correct! Wrong!

Airbus A340 - Electrical Power

Airbus A340 – Electrical Power

The Emergency generator is powered by:

When the MAINT BUS switch is on:

According to this ECAM ELEC page:

The MAINT BUS switch is located:

One function of the Electrical Contactor Management Units (ECMU) is:

Loss of one generator or TR (except, if lost is due to over current detection) provides:

According to this ECAM ELEC page:

What is the meaning of this ECAM?

According to this ECAM ELEC DC page:

According to these indications:

Each engine generator supplies power to:

The EMER GEN is powered by a hydraulic system pressurized by an engine driven hydraulic pump. Pressing the LAND RECOVERY p/b switch will:

Two Electrical Contactor Management Units (ECMU) provide:

On C/B ECAM page, the pilot reads "NORMAL". What does it mean?

With APU GEN and external powers supplying the network:

What is the meaning of this ECAM?

The minimum number of generators required to supply the whole network is:

As shown on this ECAM ELEC page, which BUS is normally supplying the ESS TR?

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

An engine generator is driven:

The main function of the MAINT BUS switch is:

What is the meaning of this ECAM?

When ECAM shows "ELEC ECMU 1 FAULT":

This ECAM ELEC page shows:

The APU battery:

According to these indications which AC BUS supplies the ESS TR?

During EMER GEN automatic start up sequence: