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

The APU battery:

Is dedicated to APU start only.

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

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

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 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!

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!

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!

According to this ECAM ELEC page:

APU is not running.

APU GEN pb is set to Off.

APU GEN is failed.

Correct! Wrong!

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

AC 1-1 BUS.

AC 1-2 BUS.

AC ESS.

Correct! Wrong!

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

No fault detected in Electronics Equipment Bay.

Electric supply to CB is normal.

There are no CB tripped or pulled.

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!

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!

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!

With APU GEN and external powers supplying the network:

APU supplies AC ESS only.

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

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

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!

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!

During EMER GEN automatic start up sequence:

The MAN ON p/b must be pushed to extinguish red fault light on the EMER ELEC PWR Panel.

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.

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!

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!

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!

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!

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!

What is the meaning of this ECAM?

Abnormal voltage.

Charging current BAT1 increasing at abnormal rate.

Battery line contactor inoperative.

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!

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.

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

Operate when the gear is extended.

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!

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!

According to this ECAM ELEC DC page:

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

There is no degradation in the capability of DC system.

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

Correct! Wrong!

An engine generator is driven:

Direct from the Accessory Gear Box (AGB).

At a ratio of 5 to engine speed.

By an Integrated Drive Generator (IDG).

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!

Airbus A340 - Electrical Power

Airbus A340 – Electrical Power

The APU battery:

What is the meaning of this ECAM?

The main function of the MAINT BUS switch is:

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

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

According to this ECAM ELEC page:

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

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

According to this ECAM ELEC page:

According to these indications:

With APU GEN and external powers supplying the network:

This ECAM ELEC page shows:

The Emergency generator is powered by:

During EMER GEN automatic start up sequence:

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

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

The MAINT BUS switch is located:

Two Electrical Contactor Management Units (ECMU) provide:

What is the meaning of this ECAM?

What is the meaning of this ECAM?

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:

When the MAINT BUS switch is on:

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

According to this ECAM ELEC DC page:

An engine generator is driven:

When ECAM shows "ELEC ECMU 1 FAULT":