240, Electrical

Question 1

With the GALY & CAB pb in the AUTO position and only one engine generator operating:

Answer 1

Automatic Galley Bus shedding occurs for the main galley, in-seat power supply, and in-flight entertainment.

Question 2

A FAULT light in the GALY & CAB pb appears when any generator load is above 100% of its rated output.

T/F?

Answer 2

True

Question 3

All circuit breakers on the overhead panel are associated with systems which are powered:

Answer 3

While in the emergency electrical configuration.

Question 4

Color coding is used to identify circuit breakers with different characteristics.

Answer 4

Green colored circuit breakers are monitored by the flight warning computers.

Question 5

Activation of the RAT MAN ON pb will cause immediate deployment of the RAT except when no power is on the aircraft.
T/F?

Answer 5

False

Question 6

The electrical system consists of:

Two aircraft batteries.

Two engine driven IDG’s.

An emergency generator.

All of the above.

Answer 6

All of the above.

Question 7

When external power is connected to the aircraft, a green AVAIL light indicates:

Answer 7

External power is connected with acceptable voltage and frequency.

Question 8

During non-normal conditions, the IDG may be disconnected for its engine and:

The IDG pushbutton should not be pressed for more than 3 seconds.

Once disconnected, the IDG cannot be reconnected in flight.

The IDG pushbutton should only be used when the engine is running or wind milling.

All of the above

Answer 8

All of the above

Question 9

The RAT automatically deploys when:

Answer 9

Power is not available for AC Bus 1 and AC Bus 2 and airspeed greater than 100 knots.

Question 10

You can deploy the RAT and activate the emergency generator using the MAN ON pb.
T/F?

Answer 10

True

Question 11

The APU generator always takes priority over an engine driven generator and/or external power.
T/F?

Answer 11

False

Question 12

The APU driven generator:

Answer 12

Can be used as the sole source of electrical power on the ground.

Question 13

When the APU generator is on and no other AC sources are available, the APU can power the entire electrical system on the ground.

T/F?

Answer 13

TRUE

Question 14

The AVAIL light illuminated on the EXT PWR pb means:

Answer 14

Voltage and frequencies are acceptable

Question 15

What does the OFF message under the APU GEN on the ELEC page indicate?

Answer 15

APU GEN pb has been selected OFF with the APU running.

Question 16

What electric source has priority with the engines off, APU available and the EXT PWR pb switch is ON.

Answer 16

EXT PWR

Question 17

Disconnecting an IDG:

Answer 17

Renders the associated electrical generator inoperative

Question 18

To avoid damage to the IDG, what must not be pressed for more than 3 seconds?

Answer 18

IDG disconnect pbs

Question 19

The “RAT OUT” memo on the E/WD indicates:

Answer 19

The RAT has deployed