AET Electrical Fundamentals 2

Question 1

What does EMF stand for in electrical systems?

Accepted Answer

Electromotive Force

Answer

EMF stands for Electromotive Force, which is the energy per unit charge supplied by a source such as a battery.

Question 2

A capacitor in an AC circuit acts primarily as which of the following?

Accepted Answer

Reactance element blocking DC

Answer

A capacitor blocks DC and presents capacitive reactance to AC signals, allowing AC to pass while blocking DC.

Question 3

Which instrument is used to measure current flow in an aircraft circuit?

Accepted Answer

Ammeter

Answer

An ammeter measures the flow of electric current in amperes and must be connected in series with the circuit.

Question 4

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

Accepted Answer

To distribute power to multiple circuits

Answer

A bus bar serves as a common distribution point that supplies power from the main source to multiple branch circuits.

Question 5

What is the typical aircraft standard DC bus voltage in most general aviation aircraft?

Accepted Answer

28V

Answer

Most aircraft use a 28V DC system, which provides adequate power while keeping wire weight practical.

AET - Avionics Electronic Technicians Practice Test