Aircraft Electrical Systems Part 4

Question 1

buses in the case of AC, they cannot be joined or “tied” unless -

Answer 1

phases are matched; this is usually done by a synchronising bus which is only used in an AC system

Question 2

the three names for the component used to cut the supply of power from the generator to the system?

Answer 2

Generator switch, line switch or generator breaker.

Question 3

The name of this component:

This component is used to cut the field and, therefor, the ability of the generator to develop power.

Answer 3

The field switch or generator control breaker

Question 4

State the different bus names and their priority in a list:

Answer 4

1. Hot Battery Bus, Emergency Bus, Vital Bus Services Bar
2. Essential Services Bus, Emergency Bus
3. Main Bus
4. Cabin Services Bus

Question 5

A transformer can be used -

Answer 5

in an AC system to vary the voltage

Question 6

diodes are used in an AC alternator to -

Answer 6

convert AC output into DC