Airbus A340 - Electrical Power

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!

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

APU generator required operational.

No effects on flight management.

Loss of the corresponding AC or DC bus.

Correct! Wrong!

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

AC ESS.

AC 1-2 BUS.

AC 1-1 BUS.

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!

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

TR contactors monitoring.

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

Automatic management of contactors.

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 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!

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!

What is the meaning of this ECAM?

BAT 2 is faulty.

TR 2 is faulty.

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

Correct! Wrong!

What is the meaning of this ECAM?

There is an ECMU fault.

There is an engine generator fault.

There is a TR overload.

Correct! Wrong!

According to this ECAM ELEC DC page:

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

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

There is no degradation in the capability of DC system.

Correct! Wrong!

The APU battery:

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

Is dedicated to APU start only.

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

Correct! Wrong!

According to these indications:

EXT POWER is not plugged and APU GEN is connected.

EXT POWER is plugged, but is not available.

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

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!

When the MAINT BUS switch is on:

The electric network supply is limited to Ground Service items.

Only the DC buses are powered.

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

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!

According to this ECAM ELEC page:

BAT1 and BAT2 are not connected to the DC network.

BAT1 and BAT2 are faulty.

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

Correct! Wrong!

Each engine generator supplies power to:

Its assigned AC BUS in normal operation.

Only its assigned BUS in all cases.

The BUS on the opposite side in normal operation.

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!

The Emergency generator is powered by:

A Ram Air Turbine (RAT).

The Static Inverter.

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

Correct! Wrong!

Two Electrical Contactor Management Units (ECMU) provide:

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.

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

Correct! Wrong!

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

AC 2-4.

AC ESS BUS.

AC 1-1.

Correct! Wrong!

The MAINT BUS switch is located:

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

On the FWD Circuit Breaker Panel behind the cockpit.

On the overhead system panel in the cockpit.

Correct! Wrong!

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

There are no CB tripped or pulled.

No fault detected in Electronics Equipment Bay.

Electric supply to CB is normal.

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?

Charging current BAT1 increasing at abnormal rate.

Abnormal voltage.

Battery line contactor inoperative.

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!

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!

Airbus A340 - Electrical Power

Quiz

Airbus A340 - Electrical Power

During EMER GEN automatic start up sequence:

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

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

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

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

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

This ECAM ELEC page shows:

What is the meaning of this ECAM?

What is the meaning of this ECAM?

According to this ECAM ELEC DC page:

The APU battery:

According to these indications:

According to this ECAM ELEC page:

When the MAINT BUS switch is on:

With APU GEN and external powers supplying the network:

According to this ECAM ELEC page:

Each engine generator supplies power to:

The main function of the MAINT BUS switch is:

The Emergency generator is powered by:

Two Electrical Contactor Management Units (ECMU) provide:

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

The MAINT BUS switch is located:

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

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

What is the meaning of this ECAM?

An engine generator is driven:

When ECAM shows "ELEC ECMU 1 FAULT":