Airbus A340 - Electrical Power

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!

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:

APU generator required operational.

Loss of the corresponding AC or DC bus.

No effects on flight management.

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!

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

Electric supply to CB is normal.

There are no CB tripped or pulled.

No fault detected in Electronics Equipment Bay.

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!

This ECAM ELEC page shows:

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.

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

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!

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!

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

AC 1-2 BUS.

AC ESS.

AC 1-1 BUS.

Correct! Wrong!

With APU GEN and external powers supplying the network:

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

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

APU supplies AC ESS only.

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!

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 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.

Operate when the gear is extended.

Supply the landing gear.

Correct! Wrong!

What is the meaning of this ECAM?

Abnormal voltage.

Charging current BAT1 increasing at abnormal rate.

Battery line contactor inoperative.

Correct! Wrong!

What is the meaning of this ECAM?

There is an engine generator fault.

There is an ECMU fault.

There is a TR overload.

Correct! Wrong!

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

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.

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 this ECAM ELEC page:

BAT1 and BAT2 are faulty.

BAT1 and BAT2 are not connected to the DC network.

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

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!

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!

The main function of the MAINT BUS switch is:

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.

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

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!

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!

When ECAM shows "ELEC ECMU 1 FAULT":

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

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!

The MAINT BUS switch is located:

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

On the overhead system panel in the cockpit.

On the FWD Circuit Breaker Panel behind the cockpit.

Correct! Wrong!

The Emergency generator is powered by:

The Static Inverter.

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.

Correct! Wrong!

Airbus A340 - Electrical Power

Quiz

Airbus A340 - Electrical Power

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

An engine generator is driven:

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

During EMER GEN automatic start up sequence:

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?

This ECAM ELEC page shows:

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

Two Electrical Contactor Management Units (ECMU) provide:

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

With APU GEN and external powers supplying the network:

According to this ECAM ELEC page:

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:

What is the meaning of this ECAM?

What is the meaning of this ECAM?

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

According to this ECAM ELEC page:

The APU battery:

According to these indications:

The main function of the MAINT BUS switch is:

According to this ECAM ELEC DC page:

When the MAINT BUS switch is on:

When ECAM shows "ELEC ECMU 1 FAULT":

What is the meaning of this ECAM?

The MAINT BUS switch is located:

The Emergency generator is powered by: