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

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!

The main function of the MAINT BUS switch is:

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.

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

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!

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!

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!

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!

What is the meaning of this ECAM?

TR 2 is faulty.

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

BAT 2 is faulty.

Correct! Wrong!

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

Loss of the corresponding AC or DC bus.

APU generator required operational.

No effects on flight management.

Correct! Wrong!

During EMER GEN automatic start up sequence:

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.

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

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!

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.

The Static Inverter.

A Ram Air Turbine (RAT).

Correct! Wrong!

According to this ECAM ELEC DC page:

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

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

There is no degradation in the capability of DC system.

Correct! Wrong!

Two Electrical Contactor Management Units (ECMU) provide:

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.

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

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!

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!

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!

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!

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!

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

AC 2-4.

AC 1-1.

AC ESS BUS.

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!

Each engine generator supplies power to:

Only its assigned BUS in all cases.

The BUS on the opposite side in normal operation.

Its assigned AC BUS in normal operation.

Correct! Wrong!

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

Electric supply to CB is normal.

There are no CB tripped or pulled.

No fault detected in Electronics Equipment Bay.

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!

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!

According to this ECAM ELEC page:

APU GEN pb is set to Off.

APU GEN is failed.

APU is not running.

Correct! Wrong!

What is the meaning of this ECAM?

Battery line contactor inoperative.

Charging current BAT1 increasing at abnormal rate.

Abnormal voltage.

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!

Airbus A340 - Electrical Power

Airbus A340 – Electrical Power

The MAINT BUS switch is located:

The main function of the MAINT BUS switch is:

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 ECAM shows "ELEC ECMU 1 FAULT":

The APU battery:

What is the meaning of this ECAM?

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

During EMER GEN automatic start up sequence:

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

The Emergency generator is powered by:

According to this ECAM ELEC DC page:

Two Electrical Contactor Management Units (ECMU) provide:

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

According to this ECAM ELEC page:

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

An engine generator is driven:

When the MAINT BUS switch is on:

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?

Each engine generator supplies power to:

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

With APU GEN and external powers supplying the network:

According to these indications:

This ECAM ELEC page shows:

According to this ECAM ELEC page:

What is the meaning of this ECAM?

What is the meaning of this ECAM?