AUT 110 Mid-Term Study Guide

What are 5 sources of electricity?

Friction, heat, light, pressure, chemical, and magnetism.

The fact that voltage can be created by exerting force on a crystal is used in which type of sensor?

Knock Senor

An electrical conductor is an element with ___________ electrons in its outer orbit

Less than 4

Tech A says that a two-wire variable resistor is called a rheostat. Tech B says that a three wire variable resistor is called a potentiometer. Which tech is correct?

Neither

Creating electricity by exerting a force on a crystal is called ___

Piezoelectricity

Like charges ________

Repel

As temperature increases

Resistance increases

Carbon and Silicon are examples of ___

Semiconductors

What are three examples of conductors and three examples of insulators?

Silver, copper, and gold are all conductors, as for insulators some examples are wood, glass, and rubber.

A potentiometer, a three-wire variable resistor is used in which type of sensor?

Throttle Position

The _________ is a unit of electrical pressure

Volt

Which unit of electricity does the work in a circuit?

Volt

Which statement from below best describes an "open" circuit?

a circuit whose conductor has lost continuity

Heavy corrosion is found on the terminals of an electrical connector. Technician A says the corrosion cases high resistance in the electrical circuits that pass through the connector. Technician B says the corrosion causes opens in the circuits that pass through the connector. Who is correct?

tech a

What is electricity?

the movement of electrons from one atom to another.

What are ampere, volt, and ohm?

Ampere is a unit used to measure current flow, volt is the unit of measurement for electrical pressure, and ohms is the unit of measurement of resistance to the flow of current through a conductor.

What is relationship between the length of a wire and its resistance?

The longer the wire the greater the resistance.

A technician is diagnosing an interior light that will not turn off. The technician removes the vehicle's carpet and finds a wire whose insulation has rubbed though , causing the wire's conductor to touch the metal body of the vehicle. When the suspect wire is lifted away from the body of the vehicle, the light turns off. This is an example of ________________.

a short to ground

Which of the following is the unit to express current flow?

amp

Which of the following summarizes electron theory?

current flows from positive to negative