AC Electrics - Practical Aircraft Systems: DGCA Technical General questions

Question 1

The purpose of a synchronizing bus bar is to:

Accepted Answer

Enable interconnections to be made between generator bus bars

Answer

Supply essential services

Answer

Monitor on load currents

Answer

Interconnect DC bus bars

Question 2

Fuses and circuit breakers are fitted:

Accepted Answer

In both AC and DC circuits

Answer

In DC circuits only

Answer

In AC circuits only

Answer

Only to protect the wiring

Question 3

Where the aircraft's main electrical supply is AC, DC requirements are met by:

Accepted Answer

TRUs

Answer

Batteries

Answer

Inverters

Answer

A static inverter

Question 4

In a split bus system using non-paralleled constant frequency alternators as the primary power source:

Accepted Answer

Essential AC loads are normally supplied from No. 1 AC bus bar via the changeover relay

Answer

Essential AC loads are supplied directly from No. 1 AC bus bar

Answer

Essential AC loads are supplied directly from No. 2 AC bus bar

Answer

Only non-essential AC loads are supplied from the AC bus bars

Question 5

In a split bus system using non-paralleled constant frequency alternators as the primary power source, if both alternators fail:

Accepted Answer

All non-essential services are lost

Answer

All non-essential services will be supplied direct from the battery bus bar

Answer

All non-essential services will be supplied from the static inverter

Answer

Essential DC consumers only will be supplied from the No. 1 TRU, all other DC services will be lost

6 more questions in this chapter