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

When the MAINT BUS switch is on:

The electric network supply is limited to Ground Service items.

Only the DC buses are powered.

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

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!

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!

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!

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!

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!

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!

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!

Two Electrical Contactor Management Units (ECMU) provide:

Control AC and DC contactors (except for TR contactors).

Control of 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:

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!

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.

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.

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!

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 try to reset corresponding generators.

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

Correct! Wrong!

What is the meaning of this ECAM?

Charging current BAT1 increasing at abnormal rate.

Battery line contactor inoperative.

Abnormal voltage.

Correct! Wrong!

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

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.

The other side outer engine generator.

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!

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

Electric supply to CB is normal.

No fault detected in Electronics Equipment Bay.

There are no CB tripped or pulled.

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!

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!

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!

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!

What is the meaning of this ECAM?

There is an engine generator fault.

There is a TR overload.

There is an ECMU fault.

Correct! Wrong!

According to this ECAM ELEC page:

APU GEN is failed.

APU is not running.

APU GEN pb is set to Off.

Correct! Wrong!

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

No effects on flight management.

Loss of the corresponding AC or DC bus.

APU generator required operational.

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!

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

AC 1-2 BUS.

AC 1-1 BUS.

AC ESS.

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!

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!

Airbus A340 - Electrical Power

Airbus A340 – Electrical Power

When the MAINT BUS switch is on:

Each engine generator supplies power to:

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

The Emergency generator is powered by:

An engine generator is driven:

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

The MAINT BUS switch is located:

Two Electrical Contactor Management Units (ECMU) provide:

According to these indications:

During EMER GEN automatic start up sequence:

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

When ECAM shows "ELEC ECMU 1 FAULT":

What is the meaning of this ECAM?

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

The main function of the MAINT BUS switch is:

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

The APU battery:

According to this ECAM ELEC page:

This ECAM ELEC page shows:

With APU GEN and external powers supplying the network:

What is the meaning of this ECAM?

According to this ECAM ELEC page:

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

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?

According to this ECAM ELEC DC page:

What is the meaning of this ECAM?