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

Two Electrical Contactor Management Units (ECMU) provide:

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.

Control of TR contactors.

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!

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 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.

Correct! Wrong!

What is the meaning of this ECAM?

Charging current BAT1 increasing at abnormal rate.

Abnormal voltage.

Battery line contactor inoperative.

Correct! Wrong!

What is the meaning of this ECAM?

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

TR 2 is faulty.

BAT 2 is faulty.

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 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 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

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

Correct! Wrong!

When the MAINT BUS switch is on:

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

The electric network supply is limited to Ground Service items.

Only the DC buses are powered.

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!

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 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!

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!

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!

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!

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!

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

Operate when the gear is extended.

Supply the landing gear.

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

Correct! Wrong!

The APU battery:

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

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

Is dedicated to APU start only.

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.

A Ram Air Turbine (RAT).

The Static Inverter.

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!

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

Two engine generators.

One engine generator.

One engine generator and the EMER GEN.

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!

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!

Each engine generator supplies power to:

Only its assigned BUS in all cases.

Its assigned AC BUS in normal operation.

The BUS on the opposite side in normal operation.

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!

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

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

Automatic management of contactors.

TR contactors monitoring.

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!

Airbus A340 - Electrical Power

Airbus A340 – Electrical Power

Two Electrical Contactor Management Units (ECMU) provide:

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

When ECAM shows "ELEC ECMU 1 FAULT":

What is the meaning of this ECAM?

What is the meaning of this ECAM?

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

According to this ECAM ELEC page:

When the MAINT BUS switch is on:

This ECAM ELEC page shows:

With APU GEN and external powers supplying the network:

According to these indications:

An engine generator is driven:

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

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

What is the meaning of this ECAM?

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

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 APU battery:

The Emergency generator is powered by:

According to this ECAM ELEC page:

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

The main function of the MAINT BUS switch is:

According to this ECAM ELEC DC page:

Each engine generator supplies power to:

The MAINT BUS switch is located:

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

During EMER GEN automatic start up sequence: