Airbus A340 - Electrical Power

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!

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 is not running.

APU GEN pb is set to Off.

APU GEN is failed.

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!

What is the meaning of this ECAM?

There is an ECMU fault.

There is a TR overload.

There is an engine generator fault.

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!

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.

The TR 2 pb is set to OFF

Correct! Wrong!

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

Two engine generators.

One engine generator and the EMER GEN.

One engine generator.

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!

The MAINT BUS switch is located:

On the FWD Circuit Breaker Panel behind the cockpit.

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

On the overhead system panel in the cockpit.

Correct! Wrong!

What is the meaning of this ECAM?

Battery line contactor inoperative.

Abnormal voltage.

Charging current BAT1 increasing at abnormal rate.

Correct! Wrong!

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

APU generator required operational.

Loss of the corresponding AC or DC bus.

No effects on flight management.

Correct! Wrong!

The APU battery:

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

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

Is dedicated to APU start only.

Correct! Wrong!

What is the meaning of this ECAM?

TR 2 is faulty.

BAT 2 is faulty.

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

Correct! Wrong!

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

AC ESS BUS.

AC 1-1.

AC 2-4.

Correct! Wrong!

With APU GEN and external powers supplying the network:

APU supplies AC ESS only.

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

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

Correct! Wrong!

According to these indications:

EXT POWER is plugged, but is not available.

EXT POWER is not plugged and APU GEN is connected.

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

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!

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

No fault detected in Electronics Equipment Bay.

There are no CB tripped or pulled.

Electric supply to CB is normal.

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!

This ECAM ELEC page shows:

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

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

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

Correct! Wrong!

An engine generator is driven:

Direct from the Accessory Gear Box (AGB).

By an Integrated Drive Generator (IDG).

At a ratio of 5 to engine speed.

Correct! Wrong!

Two Electrical Contactor Management Units (ECMU) provide:

Control of TR contactors.

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.

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 Emergency generator is powered by:

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

The Static Inverter.

A Ram Air Turbine (RAT).

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!

According to this ECAM ELEC DC page:

There is no degradation in the capability of DC system.

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

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

Correct! Wrong!

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

AC 1-2 BUS.

AC 1-1 BUS.

AC ESS.

Correct! Wrong!

Airbus A340 - Electrical Power

Quiz

Airbus A340 - Electrical Power

When ECAM shows "ELEC ECMU 1 FAULT":

When the MAINT BUS switch is on:

According to this ECAM ELEC page:

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

What is the meaning of this ECAM?

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

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

According to this ECAM ELEC page:

The MAINT BUS switch is located:

What is the meaning of this ECAM?

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

The APU battery:

What is the meaning of this ECAM?

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

With APU GEN and external powers supplying the network:

According to these indications:

The main function of the MAINT BUS switch is:

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

During EMER GEN automatic start up sequence:

This ECAM ELEC page shows:

An engine generator is driven:

Two Electrical Contactor Management Units (ECMU) provide:

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

The Emergency generator is powered by:

Each engine generator supplies power to:

According to this ECAM ELEC DC page:

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