AMT AMT Avionics & Electrical Systems

Question 1

What is the standard voltage for most general aviation aircraft electrical systems?

Accepted Answer

28 volts DC

Answer

12 volts DC

Answer

24 volts DC

Answer

115 volts AC

Question 2

Which federal regulation governs the installation of avionics and electrical equipment in US-certificated aircraft?

Accepted Answer

14 CFR Part 43

Answer

14 CFR Part 23

Answer

14 CFR Part 91

Answer

14 CFR Part 121

Question 3

What device protects an aircraft electrical circuit from overcurrent conditions?

Accepted Answer

Circuit breaker or fuse

Answer

Voltage regulator

Answer

Diode

Answer

Capacitor

Question 4

When troubleshooting an aircraft avionics system, what instrument is most commonly used to measure resistance?

Accepted Answer

Multimeter (ohmmeter function)

Answer

Oscilloscope

Answer

Ammeter

Answer

Voltmeter

Question 5

What type of wire insulation is required for aircraft electrical wiring exposed to high-temperature engine compartment areas?

Accepted Answer

MIL-SPEC high-temperature insulation (e.g., PTFE)

Answer

PVC insulation

Answer

Rubber insulation

Answer

Standard household wiring insulation

Question 6

What is the purpose of a bus bar in an aircraft electrical system?

Accepted Answer

To distribute electrical power to multiple circuits from a common point

Answer

To convert AC power to DC power

Answer

To store electrical energy

Answer

To regulate generator output voltage