Electrical

Front 1

1: Materials that do not conduct electrons easily are called:

Back 1

insulators

Front 2

2: Tech A says electrical power is a measurement of the rate at which electricity is consumed or created. Tech B says voltage drops are good when they occur inside of an intended load. Who is correct?

Back 2

Both Techs A and B

Front 3

3: Tech A says fuses and circuit breakers are designed to protect electrical circuits by opening the circuit if the current flow is excessive. Tech B says fuses are typically not used in lighting and accessory circuits where current flow is usually small. Who is correct?

Back 3

Tech A

Front 4

4: The term electronics usually refers to devices in which electrons are conducted through a:

Back 4

semiconductor.

Front 5

5: of the following devices is typically used to change DC into AC voltage?

Back 5

Inverter

Front 6

6: Which of the following is a type of current flow?

Back 6

Both A and B

Front 7

7: Which of the following is a semiconductor material?

Back 7

Both A and B

Front 8

8: Which of the following is a unit of electrical measurement?

Back 8

None of the above

Front 9

9: True or False. Hertz is the measurement of frequency and indicates the number of cycles per second

Back 9

TRUE

Front 10

10: Which of the following is an Ohm’s law formula?

Back 10

All of the above

Front 11

1: Tech A says one method of doing a voltage drop test is the direct method. Tech B says one method of doing a voltage drop test is the indirect method. Who is correct?

Back 11

Both Techs A and B

Front 12

2: The “CAT” on a digital volt-ohmmeter stands for which of the following?

Back 12

Category

Front 13

3: Which setting on a typical digital volt-ohmmeter will record the lowest and highest reading during testing?

Back 13

Min/max

Front 14

4: Tech A says a digital volt ohmmeter is typically used to locate high-resistance faults. Tech B says a digital volt ohmmeter is typically used to locate an open circuit, shorts, and grounds. Who is correct?

Back 14

Both Techs A and B

Front 15

5: Which of the following is typically a voltage range on a digital volt-ohmmeter?

Back 15

All of the above

Front 16

6: Which of the following is typically an allowable voltage drop on one side of a 12-volt system?

Back 16

0.5 volts

Front 17

7: Which of the following is the symbol for resistance?

Back 17

?

Front 18

8: Which of the following settings on an oscilloscope are considered critical?

Back 18

Voltage scale and time base

Front 19

9: True or False. Ohm’s law doesn’t help with electrical diagnosis and doesn’t show the relationships of a circuit being tested.

Back 19

FALSE

Front 20

10: Which of the following can typically cause amperage to change?

Back 20

Both A and B

Front 21

1: The typical lead-acid battery contains which of the following?

Back 21

Both A and B

Front 22

2: Tech A says a typical starter solenoid has a pull-in winding and a hold-in winding. Tech B says typically once the cranking circuit is completed, current flows from the battery to the starter field and armature. Who is correct?

Back 22

Both Techs A and B

Front 23

3: Which of the following determines the current capacity of a typical battery?

Back 23

Surface area of the plates

Front 24

4: Tech A says a solid state electronic charging system gives better wattage output at lower rpm. Tech B says a solid state electronic charging system is smaller in physical size and weight for a given output. Who is correct?

Back 24

Both Techs A and B

Front 25

5: In which of the following battery types is the electrolyte absorbed within a mat of fine glass fibers?

Back 25

Absorbed glass mat

Front 26

6: Which of the following is the term for the current draw that occurs when the vehicle has been turned off and the electrical systems shut down

Back 26

Parasitic

Front 27

7: Which of the following is the typical test load you should use to test the vehicle battery?

Back 27

50% of cold cranking amps (CCA) of the battery

Front 28

8: Which of the following should a technician check for before jump-starting any vehicle?

Back 28

Frozen battery

Front 29

9: True or False. Parasitic current draw can be measured in several ways, the most common being the process of using an ammeter capable of measuring milliamps.

Back 29

TRUE

Front 30

10: Which of the following electrical systems is used to rotate the vehicle’s combustion engine?

Back 30

Starting system

Front 31

1: What does “LED” stand for when referring to lighting?

Back 31

Light-emitting diode

Front 32

2: If a single lamp is to be used for both a stoplight and a taillight, it must contain:

Back 32

dual filaments.

Front 33

3: True or False? On many later model vehicles, the brake pedal provides an input signal to the body control module (BCM), which actually operates the brake lights.

Back 33

TRUE

Front 34

4: How much voltage may be required to initially turn on a high-intensity discharge (HID) headlamp?

Back 34

25,000 volts AC

Front 35

5: An electronic network where multiple components and systems all share the same set of wires and “listen” to the signals, then respond when requested to do so, is called a:

Back 35

controlled area network bus (CAN-bus).

Front 36

6: What is the advantage of a multiplexed electronic network compared to conventional wiring methods?

Back 36

All of the above

Front 37

7: The safety hazards present when servicing high-intensity discharge (HID) headlamp systems include:

Back 37

All of the above

Front 38

8: When replacing a light bulb (lamp), which of the following is the final step before returning the vehicle to the customer?

Back 38

None of the above

Front 39

9: Tech A says that halogen lamps burn substantially hotter than standard incandescent bulbs, but provide brighter, whiter light. Tech B says that a halogen lamp’s life can be shortened by leaving a fingerprint on it during installation. Who is correct?

Back 39

Both A and B

Front 40

10: Which of the following technologies is used in comprehensive adaptive lighting systems (smart headlight systems)?

Back 40

Both A and B

Front 41

1: In electrical and electronic systems, a _______ is a means of connecting multiple components to share either data or power.

Back 41

bus

Front 42

2: Which of the following best describes a normal pattern display on a digital storage oscilloscope screen for the CAN-bus-high and CAN-bus-low data signals?

Back 42

The two patterns should be a mirror image of each other.

Front 43

3: A windshield wiper motor is turning too slowly. With the wiper motor running, the battery voltage measures 12.4 volts. The voltage at the motor’s power and ground terminals measures 10.9 volts. This indicates:

Back 43

high resistance in the circuit.

Front 44

4: The power door lock in the right front door of a vehicle works from the driver’s door (master) switch, but not from the right front door switch. Which of the following is the MOST likely cause?

Back 44

Defective right front door switch

Front 45

5: Which of the following are needed to diagnose electrical problems in the windshield wipers?

Back 45

A DVOM and a wiring diagram

Front 46

6: An advantage of a high-voltage electrical system over a low-voltage system is:

Back 46

Both A and B

Front 47

7: In a supplemental restraint system, the device used to prevent incorrect and unnecessary airbag deployment is called the:

Back 47

safing sensor.

Front 48

8: In a keyless locking system, the remote key or fob and the computer exchange information by way of:

Back 48

radio frequency (RF) signals.

Front 49

9: With a scan tool connected to the data link connector (DLC), the data indicate that the heated seat module is not present on the CAN-bus. Which of the following is the best way to locate the problem?

Back 49

Physically locate the module and check it for power and ground.

Front 50

10: When diagnosing the cause of a horn that does not sound, the positive wire is receiving full battery voltage when the horn switch is depressed. A voltage drop test on the ground side reads 6.55 volts. Tech A says that a likely problem is a poor connection at the horn’s ground wire. Tech B says the horn is shorted internally. Who is correct?

Back 50

Tech A