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

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!

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!

An engine generator is driven:

By an Integrated Drive Generator (IDG).

At a ratio of 5 to engine speed.

Direct from the Accessory Gear Box (AGB).

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!

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!

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!

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!

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!

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!

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

AC 1-1 BUS.

AC ESS.

AC 1-2 BUS.

Correct! Wrong!

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

Automatic management of contactors.

TR contactors monitoring.

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

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!

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!

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

One engine generator and the EMER GEN.

One engine generator.

Two engine generators.

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!

The MAINT BUS switch is located:

On the overhead system panel in the cockpit.

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

On the FWD Circuit Breaker Panel behind the cockpit.

Correct! Wrong!

According to this ECAM ELEC page:

BAT1 and BAT2 are faulty.

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

BAT1 and BAT2 are not connected to the DC network.

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!

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 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 page:

APU is not running.

APU GEN pb is set to Off.

APU GEN is failed.

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!

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!

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!

Each engine generator supplies power to:

The BUS on the opposite side in normal operation.

Only its assigned BUS in all cases.

Its assigned AC BUS in normal operation.

Correct! Wrong!

What is the meaning of this ECAM?

Abnormal voltage.

Battery line contactor inoperative.

Charging current BAT1 increasing at abnormal rate.

Correct! Wrong!

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!

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

Airbus A340 – Electrical Power

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

Two Electrical Contactor Management Units (ECMU) provide:

An engine generator is driven:

What is the meaning of this ECAM?

This ECAM ELEC page shows:

When the MAINT BUS switch is on:

The APU battery:

With APU GEN and external powers supplying the network:

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

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

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

During EMER GEN automatic start up sequence:

According to this ECAM ELEC DC page:

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

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

The MAINT BUS switch is located:

According to this ECAM ELEC page:

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

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

The main function of the MAINT BUS switch is:

According to this ECAM ELEC page:

According to these indications:

What is the meaning of this ECAM?

Each engine generator supplies power to:

What is the meaning of this ECAM?

The Emergency generator is powered by:

When ECAM shows "ELEC ECMU 1 FAULT":