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The OFF position of the Standby Power Selector de-energizes the battery bus, standby AC Bus and Standby DC Bus.

Correct! Wrong!

When will the Utility Buses be shed during an engine start?

Correct! Wrong!

Three autopilots are armed for a triple channel approach. At 1200 ft RA, the Left generator is lost. As a result, the Left Main AC Bus is lost.

Correct! Wrong!

When does the Utility Bus OFF light illuminate ?

Correct! Wrong!

What is closed by pushing the Generator Control switch ON before engine start?

Correct! Wrong!

Airplane is in flight. Electrical system is in normal flight configuration. STBY POWER OFF light comes on. EICAS advisory message appears. Which position of the STBY POWER selector will provide an alternate power source to the standby buses?

Correct! Wrong!

With the APU supplying electrical power, what happens when the first engine is started?

Correct! Wrong!

The APU can be used to power the Left Main AC Bus while the Right engine generator is powering the Right Main AC Bus.

Correct! Wrong!

How many sources of AC power are there?

Correct! Wrong!

Two Engine Integrated Driven Generators (IDGs), one APU Generator, one Hydraulic Motor driven Generator (HMG) and one External power.

Pushing a Generator Control switch off opens both the field and generator breakers.

Correct! Wrong!

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A generator Drive light can indicate low oil pressure.

Correct! Wrong!

Which of the following will cause the Generator DRIVE to illuminate?

Correct! Wrong!

What is accomplished by pushing the AC Bus Tie switches to AUTO?

Correct! Wrong!

Pushing the Generator Control switch off causes the Generator Control OFF and Generator DRIVE lights illuminated.

Correct! Wrong!

The Bus tie system parallels engine generators but prevents any other sources from being paralleled.

Correct! Wrong!

The Ground Service Bus powers the cargo doors and cargo handling equipment.

Correct! Wrong!

What is the normal source of power for the STANDBY AC Bus?

Correct! Wrong!

Right DRIVE light comes on. EICAS advisory message appears. What is the cause of these indications?

Correct! Wrong!

Which bus is powered automatically when external power is plugged in and available?

Correct! Wrong!

The Ground Service Bus powers:

Correct! Wrong!

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What causes the Standby Power Bus OFF light to illuminate?

Correct! Wrong!

The Left Main AC Bus can power the battery switch off.

Correct! Wrong!

What can power the Ground Handling Bus?

Correct! Wrong!

What is the source order for powering Left and Right Main busses?

Correct! Wrong!

In flight the Left engine is shut down. What electrical buses are lost?

Correct! Wrong!

During a triple channel approach, the Right generator trips off at 140 feet RA. As a result, the F/O's primary flight instruments are lost.

Correct! Wrong!

What does the STBY POWER OFF light indicate?

Correct! Wrong!

What causes the Standby Power Bus OFF light to illuminate ?

Correct! Wrong!

What bus powers the fire extinguishers?

Correct! Wrong!

What is required to enable the F/O's instrument transfer bus to transfer with the loss of Right Main AC?

Correct! Wrong!

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The APU can be used to power the Left Main AC Bus while external power is powering the Right Main AC Bus.

Correct! Wrong!

When is the Ground Service Bus powered?

Correct! Wrong!

What bus powers most of the airplane fire detection systems?

Correct! Wrong!

To what bus is the Utility Bus connected, when the Utility Bus switch is ON?

Correct! Wrong!

What is required to enable the captain's flight instrument transfer bus to transfer with the loss of the Left Main AC?

Correct! Wrong!

DC power normally comes from two Transformer Rectifiers Units (TRUs) which are powered by their respective MAIN AC busses. If AC power is not available to operate the TRUs, then either the HMG or the MAIN BAT provides DC power (APU battery only provides power for the APU).

Correct! Wrong!

The HDG is operating while the gear is retracting.

Correct! Wrong!

What can power the Ground Service Bus?

Correct! Wrong!

The OFF position of the Standby Power Selector de-energizes the battery bus, Standby AC bus and Standby DC bus.

Correct! Wrong!

Pushing the Generator Control Switch off opens the generator field.

Correct! Wrong!

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LEFT Main AC power is lost. What is the status of the STANDBY Buses?

Correct! Wrong!

What signals the HDG to operate?

Correct! Wrong!

The Ground Handling Bus powers the battery chargers.

Correct! Wrong!

What buses can be powered by the HDG if the Main AC buses fail?

Correct! Wrong!

With the Bue Tie switch in AUTO, what causes the AC Bus ISLN light to illuminate ?

Correct! Wrong!

You are preparing the flight deck for the first flight of the day. You have just positioned the BAT switch to ON. Why are the DRIVE lights ON?

Correct! Wrong!

Which of the following arms the load shed system to trip off both Utility Buses with the loss of a Generator?

Correct! Wrong!

During flight, if the Right engine Generator is lost and the Right Bus isolated on the EICAS. What will happen to the electrical system?

Correct! Wrong!

Which of the following inhibits the APU Generator Control OFF light?

Correct! Wrong!

Pushing the Generator Control switch off resets fault trip circuitry.

Correct! Wrong!

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When can the Ground Handling Bus be powered?

Correct! Wrong!

What can power a Utility Bus?

Correct! Wrong!

Which statement is true?

Correct! Wrong!

A generator Drive light can indicate a high or low drive output RPM.

Correct! Wrong!

Prior to establishing electrical power, the Main Battery powers the Hot Battery Bus and after establishing electrical power, Main Battery Charger powers the Hot Battery Bus.

Correct! Wrong!

When APU GEN switch is positioned to OFF, APU GEN OFF light comes on. What condition might be indicated by the presence of both the ON flow bar and the APU GEN OFF light?

Correct! Wrong!

What is the highest automatic priority on the Left Main AC Bus?

Correct! Wrong!

Where is the external power receptacle?

Correct! Wrong!

What does the generator Control OFF light indicate ?

Correct! Wrong!

With the APU supplying both electrical and pneumatic power, what happens as the second engine is started?

Correct! Wrong!

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Which has priority in supplying the ground handling bus, the APU or external power?

Correct! Wrong!

Concerning 'Loadshedding' during engine start.

Correct! Wrong!

When the electric power fails, what happens to the cockpit door lock?

Correct! Wrong!

Which statement is true of the Ground Service Bus?

Correct! Wrong!

During a triple channel approach, the Left generator is lost at 140 ft RA. As a result the Left Main AC bus is lost.

Correct! Wrong!

The BUS OFF light is illuminated. What does it mean?

Please select 2 correct answers

Correct! Wrong!

The HDG produces power to:

Correct! Wrong!

Which of the following arms the load shed system to trip off Utility Buses when a generator is lost?

Correct! Wrong!

The standby buses can be powered from the Left Main AC and DC even with the Standby Selector OFF.

Correct! Wrong!

Boeing 767 – Electrical