Automotive Electrical Systems Flashcard

Front

What does a fuse do in an electrical circuit?

Back

Protects the circuit by breaking the connection if the current is too high

Front

Which device is used to measure voltage, current, and resistance in an electrical system?

Back

Digital Multimeter (DMM)

Front

What does a capacitor do in a circuit?

Back

Stores and releases electrical energy

Front

Which component allows current to flow in only one direction?

Back

Diode

Front

What is the function of the ECU in a vehicle?

Back

To manage various systems including engine performance and safety features

Front

What is the purpose of a CAN Bus (Controller Area Network) in a vehicle?

Back

To allow microcontrollers and devices to exchange data without a central computer

Front

What is the function of a circuit breaker in an electrical circuit?

Back

To automatically interrupt the flow of electricity during an overload

Front

What is a voltage drop in an electrical circuit?

Back

A reduction in voltage across a component due to resistance

Front

Which of the following can drain a vehicle's battery if excessive? Voltage drop, Parasitic draw, Circuit breaker, Ground strap

Back

Parasitic draw

Front

What can a circuit breaker do after interrupting the flow of electricity?

Back

It can be reset.