Deck 10: Drivetrain Electrical and Electronic Systems Servicing Drivetrain Electrical Systems

Question 1

Electricity is caused by the flow of electrons from one atom to another.

Answer 1

True

Question 2

Many automotive components, such as alternators, ignition coils, starter solenoids, and magnetic pulse generators operate using principles of _____.

A) electricity
B) conduction
C) induction
D) electromagnetism

Answer 2

D

Question 3

Technician A says rheostats have three connections, one at each end of the resistance and one connection to a sliding contact with the resistor. Technician B says potentiometers have two connections, one at the power end of the resistance and one connected to a sliding contact with the resistor. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Answer 3

D

Question 4

A(n) _____ is an electric switch which allows a small amount of current to control a much larger one.

A) relay
B) rheostat
C) solenoid
D) conductor

Question 5

Technician A says a diode allows current to flow in only one direction. Technician B says transistors are semiconductor switching devices. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 6

Technician A says magnetism is a source of electrical energy in an automobile. Technician B says a chemical reaction is a source of electrical energy in an automobile. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 7

A semiconductor can function as either a conductor or an insulator.

Question 8

Ohm's law is the basic law of electricity.

Question 9

A computer makes decisions based on information from its sensors.

Question 10

The resistance to current flow produces _____, which can be measured to determine the amount of resistance.

A) power
B) force
C) heat
D) an electrical shock

Question 11

Technician A says direct current (DC) flows in two directions. Technician B says alternating current (AC) flows in two directions. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 12

In the center of every atom is the electron.

Question 13

One ampere is equivalent to 10 billion electrons flowing past a given point in one second.

Question 14

Most automobile circuits work on AC, whereas the current in homes and buildings is DC.

Question 15

Batteries have two terminals, a positive and a negative.

Question 16

The clutch safety switch insures that the vehicle will not start in gear.

Question 17

While discussing the behavior of electricity, Technician A says that the amount of current which flows in a circuit is determined by the resistance in the circuit. Technician B says that as resistance goes up, the current goes down. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 18

An electrical circuit is considered _____ when there is a path connecting the positive and negative terminals of the electrical power source.

A) open
B) complete
C) direct
D) live

Question 19

Copper, silver, and aluminum are good insulators of electricity.

Question 20

The main source of electrical power for a vehicle is stored in the _____.

A) alternator
B) starter
C) battery
D) ECM

Question 21

What major component is used by auto manufacturers as a common return circuit in their wiring style?

Question 22

What are the two power sources used in an automobile's electrical system based upon?

Question 23

What is a unit of measured resistance called?

Question 24

What are the five basic parts of most automotive circuits?

Question 25

What is the difference between direct current (DC) and alternating current (AC)?

Question 26

What is the unit for measuring electrical current?

Question 27

What type of signal carries a constant or changing voltage?

Question 28

The _____ prevents the engine starting unless the clutch pedal is fully depressed.

A) clutch safety switch
B) reverse lamp switch
C) upshift lamp circuit
D) electrical clutch

Question 29

What is the function of a sensor?

Question 30

Technician A says upshift and shift lamps are controlled by the PCM. Technician B says upshift and shift lamps help the driver maximize fuel economy. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 31

State Ohm's Law.

Question 32

All vehicles sold in the United States after 1971 are required to have _____.

A) clutch safety switches
B) back-up (reverse) lights
C) shift blockers
D) ABS sensors

Question 33

What type of signal is caused by switching the circuit on and off?

Question 34

_____ is an in-vehicle networking system used to transfer data between electronic modules through a serial data bus.

A) Central processing unit
B) Electrical control module
C) Multiplexing
D) Switching

Question 35

What three things must be present in order to have a continuous flow of electricity?

Question 36

Briefly define electricity.

Question 37

What is the amount of pressure (force) required to move 1 amp of current through a resistance of 1 ohm?

Question 38

What determines the amount of electricity produced in a generator or alternator?

Question 39

What two functions are performed by switches?

Question 40

_____ are used in antilock brake systems to measure the speed of the wheels.

A) Vref sensors
B) Upshift sensors
C) Wheel speed sensors
D) ABS sensors