Airbus A340 - Electrical Power

According to this ECAM ELEC page:

APU GEN is failed.

APU is not running.

APU GEN pb is set to Off.

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!

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

No effects on flight management.

APU generator required operational.

Loss of the corresponding AC or DC bus.

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!

What is the meaning of this ECAM?

Abnormal voltage.

Charging current BAT1 increasing at abnormal rate.

Battery line contactor inoperative.

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 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!

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

AC 1-1 BUS.

AC ESS.

AC 1-2 BUS.

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.

Red fault light on EMER ELEC PWR Panel will remain on until the EMER GEN reaches its normal output.

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

Correct! Wrong!

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:

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!

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!

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!

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!

With APU GEN and external powers supplying the network:

APU supplies AC ESS only.

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

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

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.

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

Supply the landing gear.

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!

According to these indications:

EXT POWER is not plugged and APU GEN is connected.

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

EXT POWER is plugged, but is not available.

Correct! Wrong!

The APU battery:

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

Is dedicated to APU start only.

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

Correct! Wrong!

An engine generator is driven:

At a ratio of 5 to engine speed.

By an Integrated Drive Generator (IDG).

Direct from the Accessory Gear Box (AGB).

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!

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!

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!

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!

According to this ECAM ELEC page:

BAT1 and BAT2 are not connected to the DC network.

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

BAT1 and BAT2 are faulty.

Correct! Wrong!

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

Automatic management of contactors.

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

TR contactors monitoring.

Correct! Wrong!

What is the meaning of this ECAM?

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

BAT 2 is faulty.

TR 2 is faulty.

Correct! Wrong!

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

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.

The other side outer engine generator.

Correct! Wrong!

Airbus A340 - Electrical Power

Quiz

Airbus A340 - Electrical Power

According to this ECAM ELEC page:

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

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

The MAINT BUS switch is located:

What is the meaning of this ECAM?

According to this ECAM ELEC DC page:

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

During EMER GEN automatic start up sequence:

When the MAINT BUS switch is on:

Each engine generator supplies power to:

This ECAM ELEC page shows:

When ECAM shows "ELEC ECMU 1 FAULT":

The Emergency generator is powered by:

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:

The main function of the MAINT BUS switch is:

According to these indications:

The APU battery:

An engine generator is driven:

Two Electrical Contactor Management Units (ECMU) provide:

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

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

What is the meaning of this ECAM?

According to this ECAM ELEC page:

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

What is the meaning of this ECAM?

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