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

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!

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!

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!

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!

According to these indications:

EXT POWER is plugged, but is not available.

EXT POWER is being plugged and available for use when started.

EXT POWER is not plugged and APU GEN is connected.

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 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!

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!

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!

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 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.

The TR 2 pb is set to OFF

Correct! Wrong!

The MAINT BUS switch is located:

On the overhead system panel in the cockpit.

On the FWD Circuit Breaker Panel behind the cockpit.

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

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!

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 1-1 and AC 1-2 only.

APU supplies AC ESS only.

Correct! Wrong!

When the MAINT BUS switch is on:

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

Only the DC buses are powered.

The electric network supply is limited to Ground Service items.

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!

The Emergency generator is powered by:

The Static Inverter.

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.

Correct! Wrong!

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

TR contactors monitoring.

Automatic management of contactors.

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

Correct! Wrong!

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

AC 1-2 BUS.

AC ESS.

AC 1-1 BUS.

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 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.

Correct! Wrong!

The main function of the MAINT BUS switch is:

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.

To allow EXT PWR to supply AC and DC ESS buses and their respective shed buses.

Correct! Wrong!

What is the meaning of this ECAM?

There is a TR overload.

There is an ECMU fault.

There is an engine generator 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:

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

Operate when the gear is extended.

Supply the landing gear.

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!

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!

What is the meaning of this ECAM?

Battery line contactor inoperative.

Abnormal voltage.

Charging current BAT1 increasing at abnormal rate.

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!

Airbus A340 - Electrical Power

Airbus A340 – Electrical Power

Two Electrical Contactor Management Units (ECMU) provide:

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

This ECAM ELEC page shows:

During EMER GEN automatic start up sequence:

According to these indications:

The APU battery:

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

According to this ECAM ELEC DC page:

What is the meaning of this ECAM?

According to this ECAM ELEC page:

The MAINT BUS switch is located:

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

With APU GEN and external powers supplying the network:

When the MAINT BUS switch is on:

An engine generator is driven:

The Emergency generator is powered by:

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

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

When ECAM shows "ELEC ECMU 1 FAULT":

The main function of the MAINT BUS switch is:

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:

Each engine generator supplies power to:

According to this ECAM ELEC page:

What is the meaning of this ECAM?

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