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

Question 1

Batteries have two terminals, a positive and a negative.

Answer 1

True

Question 2

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

Answer 2

False

Question 3

A computer makes decisions based on information from its sensors.

Answer 3

True

Question 4

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

Question 5

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

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

Question 6

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 7

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 8

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

Question 9

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 10

In the center of every atom is the electron.

Question 11

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 12

Ohm's law is the basic law of electricity.

Question 13

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 14

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

Question 15

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 16

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

Question 17

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

Question 18

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

Question 19

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 20

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

Question 21

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 22

_____ 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 23

What is a unit of measured resistance called?

Question 24

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

Question 25

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 26

_____ 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

Question 27

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

Question 28

What is the unit for measuring electrical current?

Question 29

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

Question 30

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

Question 31

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

Question 32

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

Question 33

What two functions are performed by switches?

Question 34

State Ohm's Law.

Question 35

What type of signal carries a constant or changing voltage?

Question 36

What are the five basic parts of most automotive circuits?

Question 37

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 38

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

Question 39

What is the function of a sensor?

Question 40

Briefly define electricity.