AET Electrical Fundamentals 3

Question 1

What is inductance measured in?

Accepted Answer

Henrys

Answer

Inductance is measured in henrys (H), named after Joseph Henry, and represents the opposition to changes in current.

Question 2

In an aircraft, what device converts AC power to DC power?

Accepted Answer

Rectifier

Answer

A rectifier converts alternating current (AC) to direct current (DC) using diodes to allow only one direction of current flow.

Question 3

What is the function of a zener diode in an avionics circuit?

Accepted Answer

Voltage regulation

Answer

A zener diode maintains a constant reference voltage by conducting in reverse at its breakdown voltage, making it useful for voltage regulation.

Question 4

What type of fault occurs when a conductor contacts the aircraft structure unintentionally?

Accepted Answer

Short to ground

Answer

A short to ground (or ground fault) occurs when an uninsulated conductor touches the aircraft's metallic structure, creating an unintended current path.

Question 5

Which law states that the algebraic sum of all currents entering and leaving a node equals zero?

Accepted Answer

Kirchhoff's Current Law

Answer

Kirchhoff's Current Law (KCL) states that the total current entering a junction equals the total current leaving it.

AET - Avionics Electronic Technicians Practice Test

AET - Avionics Electronic Technicians Practice Test

AET Electrical Fundamentals 3