Electrical

Question 1

The Generator Control Unit (GCUs) can provide _________

Answer 1

Voltage regulation

Question 2

Loss of one inverter causes what kind of condition?

Answer 2

A red warning annunciation “#1 AC BUS” or “#2 AC BUS” and loss of appropriate AC bus equipment.

Question 3

What does illumination of a single GEN TIE OPEN annunciation indicate?

Answer 3

Respective generator bus has been isolated from centre bus.

Question 4

The entry light circuit powers the cockpit emergency lights which is powered by the __________ bus.

Answer 4

Dual-fed

Question 5

Normal generator voltage output is ______ VDC.

Answer 5

28.25 +/- 0.25

Question 6

Generator Load is limited to ________ percent during ground operations below 70% N1?

Answer 6

75%

Question 7

An adequate ground power unit shall be capable of delivering _______ amps continuously?

Answer 7

300 amps

Question 8

With the battery switch OFF and the battery bus switch EMERGENCY OFF, what should the battery bus voltage read?

Answer 8

0 volts

Question 9

What are the 3 sources from which the triple fed bus receives voltage?

Answer 9

Battery, Left Generator, Right Generator Buses

Question 10

The Engine Starting normal procedures call for the right generator to be RESET after the left engine has been started, and check for illumination of the L and R GEN TIE OPEN annunciations. Why?

Answer 10

The voltage of the second generator can be verified to be satisfactory while the first generator is off-line.

Question 11

If the start switch is left in the IGNITION and ENGINE START position, what cannot be activated?

Answer 11

Generator