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

The APU battery:

Is dedicated to APU start only.

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

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

Correct! Wrong!

An engine generator is driven:

By an Integrated Drive Generator (IDG).

At a ratio of 5 to engine speed.

Direct from the Accessory Gear Box (AGB).

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.

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

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

Correct! Wrong!

According to this ECAM ELEC page:

APU GEN is failed.

APU GEN pb is set to Off.

APU is not running.

Correct! Wrong!

What is the meaning of this ECAM?

There is a TR overload.

There is an engine generator fault.

There is an ECMU fault.

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 not plugged and APU GEN is connected.

EXT POWER is plugged, but is not available.

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!

Each engine generator supplies power to:

The BUS on the opposite side in normal operation.

Its assigned AC BUS in normal operation.

Only its assigned BUS in all cases.

Correct! Wrong!

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

One engine generator and the EMER GEN.

One engine generator.

Two engine generators.

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!

The TR 2 pb is set to OFF

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

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

Correct! Wrong!

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

Loss of the corresponding AC or DC bus.

APU generator required operational.

No effects on flight management.

Correct! Wrong!

What is the meaning of this ECAM?

Battery line contactor inoperative.

Abnormal voltage.

Charging current BAT1 increasing at abnormal rate.

Correct! Wrong!

Two Electrical Contactor Management Units (ECMU) provide:

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

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

Control of TR contactors.

Correct! Wrong!

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

AC ESS BUS.

AC 2-4.

AC 1-1.

Correct! Wrong!

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

AC ESS.

AC 1-1 BUS.

AC 1-2 BUS.

Correct! Wrong!

The main function of the MAINT BUS switch is:

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

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.

Correct! Wrong!

What is the meaning of this ECAM?

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

BAT 2 is faulty.

TR 2 is faulty.

Correct! Wrong!

The MAINT BUS switch is located:

On the FWD Circuit Breaker Panel behind the cockpit.

On the overhead system panel in the cockpit.

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

Correct! Wrong!

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!

With APU GEN and external powers supplying the network:

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

APU supplies AC ESS only.

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

Correct! Wrong!

When the MAINT BUS switch is on:

The electric network supply is limited to Ground Service items.

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

Only the DC buses are powered.

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!

This ECAM ELEC page shows:

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.

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

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:

Operate when the gear is extended.

Supply the landing gear.

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

Correct! Wrong!

When ECAM shows "ELEC ECMU 1 FAULT":

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.

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

Correct! Wrong!

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

No fault detected in Electronics Equipment Bay.

Electric supply to CB is normal.

There are no CB tripped or pulled.

Correct! Wrong!

Airbus A340 - Electrical Power

Airbus A340 – Electrical Power

The APU battery:

An engine generator is driven:

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

According to this ECAM ELEC page:

What is the meaning of this ECAM?

According to this ECAM ELEC DC page:

According to these indications:

According to this ECAM ELEC page:

Each engine generator supplies power to:

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

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:

What is the meaning of this ECAM?

Two Electrical Contactor Management Units (ECMU) provide:

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

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

The main function of the MAINT BUS switch is:

What is the meaning of this ECAM?

The MAINT BUS switch is located:

The Emergency generator is powered by:

With APU GEN and external powers supplying the network:

When the MAINT BUS switch is on:

During EMER GEN automatic start up sequence:

This ECAM ELEC page shows:

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

When ECAM shows "ELEC ECMU 1 FAULT":

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