Electrical Unit: Ultimate Practice Exam! Quiz

Get ready for your upcoming electrical unit exam with our comprehensive practice quiz. This quiz covers essential topics such as traditional automobile battery types, batteries with removable cell covers, proper safety gear for technicians, and standard automotive network configurations. Use this engaging quiz to enhance your study efforts. Good luck!

Edited by Me.bot Editorial Team Questions: 50 September 21, 2024

Character Test

1. _____________ is/are essential to the modern automobile.

A 12-volt rechargeable battery

An advanced engine starting system

An efficient charging system

All of the above

2. The conventional automobile battery type is the:

Lead acid.

Lithium-ion.

Nickel-metal hydride.

Sodium-ion.

3. The standard voltage of each cell in a 12-volt battery is _____________ volts.

1.9

2.0

2.1

2.2

4. Which type of battery typically has removable cell covers?

Serviceable

Non-maintenance free

Lead acid flooded cell

None of the above

5. A technician must always wear ______________ when handling a battery.

Protective gloves

Jewelry

Tennis shoes

Safety glasses

6. Tech A says that batteries should be disposed of in landfills. Tech B says that batteries must be recycled properly. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

7. Tech A says that the starter converts mechanical energy to electrical energy. Tech B says that the starter converts electrical energy to mechanical energy. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

8. The _____________ controls battery charging by varying current flow.

Slip rings

Rotor

Voltage regulator

Armature

9. The process of changing alternating current (AC) to direct current (DC) is called:

Rectification.

Electromotive force (EMF).

Counter-electromotive force (CEMF).

Recertification.

10. The ______________ in the rectifier assembly allows current to flow in one direction.

Diode

Thyristor

Electromotive force (EMF)

Counter-electromotive force (CEMF)

11. Tech A says that removing a cable from the battery post is a quick test for the alternator. Tech B says that this practice can damage the vehicle's electronics. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

12. On modern vehicles, what typically replaces the standalone voltage regulator?

Powertrain control module (PCM) or body control module (BCM)

Electronic control module (ECM)

Electromotive force (EMF)

Counter-electromotive force (CEMF)

13. Tech A says the standard 12-volt car battery has 3 cells with 4 volts each. Tech B says the standard 12-volt car battery has 6 cells with 2 volts each. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

14. Tech A says a damaged battery hold-down can cause plate damage. Tech B says using a bungee cord is an acceptable battery hold-down. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

15. CAN-bus typically operates on a _______-speed network.

Medium

High

Low

Variable

16. Most networks have dual wires, commonly referred to as __AN-bus high (H)_ and __AN-bus low (L)_, with identical messages sent on both lines.

True

False

Partially True

None of the above

17. All of the following are common automotive network configurations EXCEPT:

Bussed parallel.

Looped series.

Star parallel.

Triangle series.

18. Which of the following is NOT a diagnostic tool used for testing CAN-bus systems?

Data link connector (DLC) breakout box

Digital volt-ohmmeter

Network tester

Digital storage oscilloscope

19. When diagnosing and repairing electronic modules, you may need:

Software transfers

Flash reprogramming

Software updates

All of the above

20. The component that maintains the electrical connection as the steering wheel rotates is called a:

Slot spring.

Swivel switch.

Clock spring.

Diaphragm.

21. If only the intermittent speed setting on the windshield wipers is malfunctioning, the likely cause is a faulty:

Fuse.

Delay module.

Motor brush.

Switch.

22. Tech A says high-speed networks are used for critical systems like ABS and engine controls. Tech B says low-speed networks are used for less critical systems like entertainment. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

23. Tech A says the CAN-bus system includes a DLC for connecting diagnostic tools. Tech B says an issue with the CAN-bus system will typically set a DTC with an ___ designation. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

24. Tech A says any component in the horn circuit can fail. Tech B says it's often easiest to first test if power is reaching the horn. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

25. What does DVOM stand for?

Digital volt-hour meter

Digital volt-ohmmeter

Digital valve ohmmeter

Digital variable oval meter

26. A DVOM reading of 2168 mV is equivalent to:

2168 millivolts.

2.168 volts.

1000 mV.

Both A and B

27. When probing wires, you should all EXCEPT:

Back probe when possible.

Use caution when piercing wires.

Reinsulate with vulcanizing silicone.

Use excessive force.

28. Tech A says you can measure up to 100 amps directly through the meter. Tech B says you need a volt clamp to check high volts. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

29. Tech A says most DVOMs have auto and manual range settings. Tech B says OL on a DVOM means overload. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

30. When doing a voltage drop test, a reading of 2.7 volts across the circuit means how many volts are going to the load?

12 volts

9.3 volts

8.3 volts

3.7 volts

31. Tech A says testing across the battery gives better voltage. Tech B says a 2-volt drop across a switch means 10 volts are reaching the light. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

32. Tech A says the voltmeter needs to be set to ohm for a voltage drop test. Tech B says current must be flowing for a voltage drop test. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

33. Tech A says in a relay, current through a resistor creates a magnetic field. Tech B says to check amps, connect leads parallel to the circuit. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

34. Tech A says power must be connected to measure resistance. Tech B says it's ideal to disconnect the component. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

35. Using Ohm's law, how many amps are required in a circuit with a 110-ohm resistor and a 12-volt supply?

12 amps.

1.2 amps.

0.12 amps.

0.012 amps.

36. Tech A says there are three ways to check a circuit using Ohm's law. Tech B says knowing two measurements allows calculation of the third. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

37. With a voltage of 0.202 volts and current draw of 0.00202 amps, what is the circuit resistance?

1 ohm

10 ohms

100 ohms

1000 ohms

38. When performing a voltage drop test, you should do all EXCEPT:

Select auto range volts DC.

Connect the red lead to volt/ohm.

Remove the battery cable.

Ensure current is flowing.

39. Tech A says to calculate total circuit current using I = V / R. Tech B says you can determine voltage drop using Ohm's law. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

40. Tech A says voltage drops can be measured if current is flowing. Tech B says voltage drops can be measured across components and cables. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

41. To calculate current flow in a parallel circuit with 4 resistors, you would:

Divide total current by voltage.

Multiply current flow by 4.

Add each resistor's current flow.

Subtract volts from amps.

42. A variable resistor:

Has fixed resistance.

Changes with voltage applied.

Has a movable arm on a resistive coil.

All of the above

43. Tech A says checking a variable resistor is like checking a regular resistor. Tech B says a different DVOM is needed for variable resistors. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

44. Tech A says an oscilloscope is also called a lab scope. Tech B says lab scopes are not important in modern cars. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

45. Tech A says an atom with more electrons has a positive charge. Tech B says not all atoms easily transfer electrons. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

46. What materials make good insulators?

Copper and aluminum

Ceramic and plastic

Both A and B

None of the above

47. Tech A says a resistor extracts energy from current flow. Tech B says a voltmeter checks voltage drop. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

48. Tech A says a power supply is needed for a simple circuit. Tech B says a switch can interrupt the circuit. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

49. Volts, amps, and ohms are the three basic units of electrical measurement.

True

False

Sometimes

Not sure

50. Tech A says AC stands for alternating current. Tech B says DC is used in motors of most hybrid vehicles. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

Want to Discover Shapes of Life? Try Me.bot

Discover The Unexpected and Find Incredible Inspirations

Try Me.bot

Frequently Asked Questions

What topics are covered in the Electrical Unit: Ultimate Practice Exam! Quiz?

How can the Electrical Unit: Ultimate Practice Exam! Quiz help me prepare for my exam?

Are safety practices included in the Electrical Unit: Ultimate Practice Exam! Quiz?

Why should I use the Electrical Unit: Ultimate Practice Exam! Quiz to study?

Is the Electrical Unit: Ultimate Practice Exam! Quiz suitable for all levels of learners?

The Electrical Unit: Ultimate Practice Exam! Quiz covers essential topics such as traditional automobile battery types, batteries with removable cell covers, the proper safety gear for technicians, and standard automotive network configurations.

The Electrical Unit: Ultimate Practice Exam! Quiz helps you prepare for your exam by providing comprehensive coverage of key topics you need to study, making it a useful tool for reinforcing your knowledge.

Yes, the Electrical Unit: Ultimate Practice Exam! Quiz includes questions on safety practices, such as what a technician must always wear when working with a battery.

You should use the Electrical Unit: Ultimate Practice Exam! Quiz to study because it provides an engaging way to review important concepts, ensuring you're well-prepared for your exam.

Yes, the Electrical Unit: Ultimate Practice Exam! Quiz is designed to be beneficial for learners at various levels, offering a thorough review of key topics for the electrical unit exam.

RELATED QUIZZES

2024-09-26

Electrical Unit: Ultimate Practice Exam! Quiz

Character Test

1. _____________ is/are essential to the modern automobile.

2. The conventional automobile battery type is the:

3. The standard voltage of each cell in a 12-volt battery is _____________ volts.

4. Which type of battery typically has removable cell covers?

5. A technician must always wear ______________ when handling a battery.

6. Tech A says that batteries should be disposed of in landfills. Tech B says that batteries must be recycled properly. Who is correct?

7. Tech A says that the starter converts mechanical energy to electrical energy. Tech B says that the starter converts electrical energy to mechanical energy. Who is correct?

8. The _____________ controls battery charging by varying current flow.

9. The process of changing alternating current (AC) to direct current (DC) is called:

10. The ______________ in the rectifier assembly allows current to flow in one direction.

11. Tech A says that removing a cable from the battery post is a quick test for the alternator. Tech B says that this practice can damage the vehicle's electronics. Who is correct?

12. On modern vehicles, what typically replaces the standalone voltage regulator?

13. Tech A says the standard 12-volt car battery has 3 cells with 4 volts each. Tech B says the standard 12-volt car battery has 6 cells with 2 volts each. Who is correct?

14. Tech A says a damaged battery hold-down can cause plate damage. Tech B says using a bungee cord is an acceptable battery hold-down. Who is correct?

15. CAN-bus typically operates on a _______-speed network.

16. Most networks have dual wires, commonly referred to as __AN-bus high (H)_ and __AN-bus low (L)_, with identical messages sent on both lines.

17. All of the following are common automotive network configurations EXCEPT:

18. Which of the following is NOT a diagnostic tool used for testing CAN-bus systems?

19. When diagnosing and repairing electronic modules, you may need:

20. The component that maintains the electrical connection as the steering wheel rotates is called a:

21. If only the intermittent speed setting on the windshield wipers is malfunctioning, the likely cause is a faulty:

22. Tech A says high-speed networks are used for critical systems like ABS and engine controls. Tech B says low-speed networks are used for less critical systems like entertainment. Who is correct?

23. Tech A says the CAN-bus system includes a DLC for connecting diagnostic tools. Tech B says an issue with the CAN-bus system will typically set a DTC with an ___ designation. Who is correct?

24. Tech A says any component in the horn circuit can fail. Tech B says it's often easiest to first test if power is reaching the horn. Who is correct?

25. What does DVOM stand for?

26. A DVOM reading of 2168 mV is equivalent to:

27. When probing wires, you should all EXCEPT:

28. Tech A says you can measure up to 100 amps directly through the meter. Tech B says you need a volt clamp to check high volts. Who is correct?

29. Tech A says most DVOMs have auto and manual range settings. Tech B says OL on a DVOM means overload. Who is correct?

30. When doing a voltage drop test, a reading of 2.7 volts across the circuit means how many volts are going to the load?

31. Tech A says testing across the battery gives better voltage. Tech B says a 2-volt drop across a switch means 10 volts are reaching the light. Who is correct?

32. Tech A says the voltmeter needs to be set to ohm for a voltage drop test. Tech B says current must be flowing for a voltage drop test. Who is correct?

33. Tech A says in a relay, current through a resistor creates a magnetic field. Tech B says to check amps, connect leads parallel to the circuit. Who is correct?

34. Tech A says power must be connected to measure resistance. Tech B says it's ideal to disconnect the component. Who is correct?

35. Using Ohm's law, how many amps are required in a circuit with a 110-ohm resistor and a 12-volt supply?

36. Tech A says there are three ways to check a circuit using Ohm's law. Tech B says knowing two measurements allows calculation of the third. Who is correct?

37. With a voltage of 0.202 volts and current draw of 0.00202 amps, what is the circuit resistance?

38. When performing a voltage drop test, you should do all EXCEPT:

39. Tech A says to calculate total circuit current using I = V / R. Tech B says you can determine voltage drop using Ohm's law. Who is correct?

40. Tech A says voltage drops can be measured if current is flowing. Tech B says voltage drops can be measured across components and cables. Who is correct?

41. To calculate current flow in a parallel circuit with 4 resistors, you would:

42. A variable resistor:

43. Tech A says checking a variable resistor is like checking a regular resistor. Tech B says a different DVOM is needed for variable resistors. Who is correct?

44. Tech A says an oscilloscope is also called a lab scope. Tech B says lab scopes are not important in modern cars. Who is correct?

45. Tech A says an atom with more electrons has a positive charge. Tech B says not all atoms easily transfer electrons. Who is correct?

46. What materials make good insulators?

47. Tech A says a resistor extracts energy from current flow. Tech B says a voltmeter checks voltage drop. Who is correct?

48. Tech A says a power supply is needed for a simple circuit. Tech B says a switch can interrupt the circuit. Who is correct?

49. Volts, amps, and ohms are the three basic units of electrical measurement.

50. Tech A says AC stands for alternating current. Tech B says DC is used in motors of most hybrid vehicles. Who is correct?

Frequently Asked Questions

APUSH Unit 1 Practice Test

AP Psychology Unit 1 Practice Test

Economics Unit 1 Practice Test