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

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 not reset corresponding generators.

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

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!

The main function of the MAINT BUS switch is:

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

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

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

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!

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 running.

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

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!

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!

What is the meaning of this ECAM?

Abnormal voltage.

Battery line contactor inoperative.

Charging current BAT1 increasing at abnormal rate.

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 page:

APU GEN is failed.

APU GEN pb is set to Off.

APU is not running.

Correct! Wrong!

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

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.

The other side outer engine generator.

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:

Supply the landing gear.

Operate when the gear is extended.

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

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!

Each engine generator supplies power to:

Only its assigned BUS in all cases.

The BUS on the opposite side in normal operation.

Its assigned AC BUS in normal operation.

Correct! Wrong!

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!

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!

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

AC 1-1.

AC 2-4.

AC ESS BUS.

Correct! Wrong!

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.

The TR 2 pb is set to OFF

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.

The MAN ON p/b must be pushed to extinguish red fault light 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.

Correct! Wrong!

According to this ECAM ELEC page:

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

BAT1 and BAT2 are faulty.

BAT1 and BAT2 are not connected to the DC network.

Correct! Wrong!

According to this ECAM ELEC DC page:

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

There is no degradation in the capability of DC system.

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

Correct! Wrong!

When the MAINT BUS switch is on:

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

Only the DC buses are powered.

The electric network supply is limited to Ground Service items.

Correct! Wrong!

An engine generator is driven:

At a ratio of 5 to engine speed.

Direct from the Accessory Gear Box (AGB).

By an Integrated Drive Generator (IDG).

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.

No effects on flight management.

APU generator required operational.

Correct! Wrong!

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

Automatic management of contactors.

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

TR contactors monitoring.

Correct! Wrong!

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

One engine generator and the EMER GEN.

Two engine generators.

One engine generator.

Correct! Wrong!

The Emergency generator is powered by:

A Ram Air Turbine (RAT).

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

The Static Inverter.

Correct! Wrong!

Airbus A340 - Electrical Power

Airbus A340 – Electrical Power

When ECAM shows "ELEC ECMU 1 FAULT":

Two Electrical Contactor Management Units (ECMU) provide:

The main function of the MAINT BUS switch is:

With APU GEN and external powers supplying the network:

This ECAM ELEC page shows:

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

According to these indications:

What is the meaning of this ECAM?

What is the meaning of this ECAM?

According to this ECAM ELEC page:

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

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

What is the meaning of this ECAM?

Each engine generator supplies power to:

The APU battery:

The MAINT BUS switch is located:

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?

During EMER GEN automatic start up sequence:

According to this ECAM ELEC page:

According to this ECAM ELEC DC page:

When the MAINT BUS switch is on:

An engine generator is driven:

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

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

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

The Emergency generator is powered by: