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

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!

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!

An engine generator is driven:

At a ratio of 5 to engine speed.

By an Integrated Drive Generator (IDG).

Direct from the Accessory Gear Box (AGB).

Correct! Wrong!

During EMER GEN automatic start up sequence:

Red fault light on EMER ELEC PWR Panel will remain on until the EMER GEN reaches its normal output.

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.

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!

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!

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!

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!

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!

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.

Supply the landing gear.

Operate when the gear is extended.

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!

What is the meaning of this ECAM?

Charging current BAT1 increasing at abnormal rate.

Battery line contactor inoperative.

Abnormal voltage.

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!

Two Electrical Contactor Management Units (ECMU) provide:

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).

Control of TR contactors.

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 not reset corresponding generators.

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

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!

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 pb is set to Off.

APU is not running.

APU GEN is failed.

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 APU battery:

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

Is dedicated to APU start only.

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

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!

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 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.

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!

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

AC 1-1.

AC ESS BUS.

AC 2-4.

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!

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 ESS only.

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

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!

Airbus A340 - Electrical Power

Airbus A340 – Electrical Power

The Emergency generator is powered by:

According to these indications:

An engine generator is driven:

During EMER GEN automatic start up sequence:

Each engine generator supplies power to:

When the MAINT BUS switch is on:

What is the meaning of this ECAM?

The MAINT BUS switch is located:

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

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:

What is the meaning of this ECAM?

What is the meaning of this ECAM?

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

Two Electrical Contactor Management Units (ECMU) provide:

When ECAM shows "ELEC ECMU 1 FAULT":

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

According to this ECAM ELEC page:

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

The APU battery:

According to this ECAM ELEC DC page:

The main function of the MAINT BUS switch is:

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

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

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

With APU GEN and external powers supplying the network:

According to this ECAM ELEC page: