Question 1

When using a DMM to test resistance, the red lead is connected to the A jack.

Accepted Answer

A) True 
 B)False

Question 2

The most common way to check a variable resistor is with a(n) ____________________.

Accepted Answer

The answer of The most common way to check a...

Question 3

Explain how you would bench test a relay [the relay is removed from the vehicle].

Accepted Answer

Test for continuity between the coil ter...

Question 4

The wiring harness for the SIR [air bag] circuit has a _____ harness cover.

Accepted Answer

A)   red
B)   orange
C)   day glow green
D)   yellowE) A) and D)
F) B) and D)

Question 5

How can you test a circuit that blows its fuse as soon as it is in inserted into the fuse holder?

Accepted Answer

Use a jumper wire with an automatic rese...

Question 6

You are wiring a vehicle for a trailer hitch. The trailer will have eight parking lamps. Each parking lamp uses a 6 watt light bulb. What size fuse should be used to supply power for the parking lamp circuit? [Assume that the normal operating voltage is 14 volts.]

Accepted Answer

The answer of You are wiring a vehicle for a...

Question 7

A voltage drop test can find excessive resistance in a circuit that may not be detected using an ohmmeter.

Accepted Answer

A) True 
 B)False

Question 8

A technician is diagnosing the cause of an insufficient heat problem. He notices the fan is working but not providing much air flow. He disconnects the fan power feed wire and connects the fan to the battery using a fused jumper wire. The specification for the fan motor is 16 amps. His ammeter shows 26 amps when the fan is jumped directly to the battery. What could be the problem?

Accepted Answer

A)   bad fan motor ground
B)   high resistance in the fan motor wiring
C)   shorted wiring in the fan motor
D)   all answers are correctE) All of the above
F) None of the above

Question 9

Technician A says electrical circuit resistance causes voltage drop. Technician B says high-resistance problems cause an increase in current flow. Who is correct?

Accepted Answer

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

Question 10

What is a short circuit?

Accepted Answer

A short circuit has ...

Question 11

The black DMM test lead always plugs into the COM input jack.

Accepted Answer

A) True 
 B)False

Question 12

Duty cycle is measured in ____________________.

Accepted Answer

The answer of Duty cycle is measured in ____________________....

Question 13

Resistance checks are being discussed. Technician A says the component must be disconnected from the system before checking. Technician B says an infinite reading means the component is shorted. Who is correct?

Accepted Answer

A)   A only
B)   B only
C)   both A and B
D)   neither A nor BE) All of the above
F) C) and D)

Question 14

High resistance in a circuit causes decreased current flow.

Accepted Answer

A) True 
 B)False

Question 15

How does an inductive amps probe measure current without touching any wires in the circuit?

Accepted Answer

The probe measures t...

Question 16

Taking electrical measurements from the external wire terminal ends on the outside of a plugged-in electrical connector is called ____________________.

Accepted Answer

The answer of Taking electrical measurements from the external wire...

Question 17

The voltage specification for a wheel speed sensor is 3.5 to 6.0 VAC RMS ± 0.5/20 MPH. What does RMS stand for? ____________________

Accepted Answer

Root mean square
A R...

Question 18

A conventional ammeter is always connected in ____________________ with the circuit.

Accepted Answer

The answer of A conventional ammeter is always connected in...

Question 19

The schematic for a relay is typically shown on the outside of the relay.

Accepted Answer

A) True 
 B)False

Question 20

Other than measure voltage, current and resistance most DMMs [DVOMs] can also measure and test what other factors?

Accepted Answer

frequency
duty cycle...

Exam 16: General Electrical System Diagnostics and Service

What is a short circuit?

Correct Answer
verified
A short circuit has ...
View Answer

When using a DMM to test resistance, the red lead is connected to the A jack.

Correct Answer
verified

Correct Answer
verified

Taking electrical measurements from the external wire terminal ends on the outside of a plugged-in electrical connector is called ____________________.

Correct Answer
verified

The wiring harness for the SIR [air bag] circuit has a _____ harness cover.

Correct Answer
verified

How can you test a circuit that blows its fuse as soon as it is in inserted into the fuse holder?

Correct Answer
verified
Use a jumper wire with an automatic rese...
View Answer

A conventional ammeter is always connected in ____________________ with the circuit.

Correct Answer
verified

The black DMM test lead always plugs into the COM input jack.

Correct Answer
verified

The most common way to check a variable resistor is with a(n) ____________________.

Correct Answer
verified

You are wiring a vehicle for a trailer hitch. The trailer will have eight parking lamps. Each parking lamp uses a 6 watt light bulb. What size fuse should be used to supply power for the parking lamp circuit? [Assume that the normal operating voltage is 14 volts.]

Correct Answer
verified

A voltage drop test can find excessive resistance in a circuit that may not be detected using an ohmmeter.

Correct Answer
verified

Technician A says electrical circuit resistance causes voltage drop. Technician B says high-resistance problems cause an increase in current flow. Who is correct?

Correct Answer
verified

Resistance checks are being discussed. Technician A says the component must be disconnected from the system before checking. Technician B says an infinite reading means the component is shorted. Who is correct?

Correct Answer
verified

How does an inductive amps probe measure current without touching any wires in the circuit?

Correct Answer
verified
The probe measures t...
View Answer

Explain how you would bench test a relay [the relay is removed from the vehicle].

Correct Answer
verified
Test for continuity between the coil ter...
View Answer

High resistance in a circuit causes decreased current flow.

Correct Answer
verified

Duty cycle is measured in ____________________.

Correct Answer
verified

The voltage specification for a wheel speed sensor is 3.5 to 6.0 VAC RMS ± 0.5/20 MPH. What does RMS stand for? ____________________

Correct Answer
verified
Root mean square
A R...
View Answer

The schematic for a relay is typically shown on the outside of the relay.

Correct Answer
verified

Other than measure voltage, current and resistance most DMMs [DVOMs] can also measure and test what other factors?

Correct Answer
verified
frequency
duty cycle...
View Answer

Exam 16: General Electrical System Diagnostics and Service

What is a short circuit?

Correct AnswerverifiedA short circuit has ...View AnswerShow Answer

When using a DMM to test resistance, the red lead is connected to the A jack.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Taking electrical measurements from the external wire terminal ends on the outside of a plugged-in electrical connector is called ____________________.

Correct AnswerverifiedShow Answer

The wiring harness for the SIR [air bag] circuit has a _____ harness cover.

Correct AnswerverifiedShow Answer

How can you test a circuit that blows its fuse as soon as it is in inserted into the fuse holder?

Correct AnswerverifiedUse a jumper wire with an automatic rese...View AnswerShow Answer

A conventional ammeter is always connected in ____________________ with the circuit.

Correct AnswerverifiedShow Answer

The black DMM test lead always plugs into the COM input jack.

Correct AnswerverifiedShow Answer

The most common way to check a variable resistor is with a(n) ____________________.

Correct AnswerverifiedShow Answer

You are wiring a vehicle for a trailer hitch. The trailer will have eight parking lamps. Each parking lamp uses a 6 watt light bulb. What size fuse should be used to supply power for the parking lamp circuit? [Assume that the normal operating voltage is 14 volts.]

Correct AnswerverifiedShow Answer

A voltage drop test can find excessive resistance in a circuit that may not be detected using an ohmmeter.

Correct AnswerverifiedShow Answer

Technician A says electrical circuit resistance causes voltage drop. Technician B says high-resistance problems cause an increase in current flow. Who is correct?

Correct AnswerverifiedShow Answer

Resistance checks are being discussed. Technician A says the component must be disconnected from the system before checking. Technician B says an infinite reading means the component is shorted. Who is correct?

Correct AnswerverifiedShow Answer

How does an inductive amps probe measure current without touching any wires in the circuit?

Correct AnswerverifiedThe probe measures t...View AnswerShow Answer

Explain how you would bench test a relay [the relay is removed from the vehicle].

Correct AnswerverifiedTest for continuity between the coil ter...View AnswerShow Answer

High resistance in a circuit causes decreased current flow.

Correct AnswerverifiedShow Answer

Duty cycle is measured in ____________________.

Correct AnswerverifiedShow Answer

The voltage specification for a wheel speed sensor is 3.5 to 6.0 VAC RMS ± 0.5/20 MPH. What does RMS stand for? ____________________

Correct AnswerverifiedRoot mean squareA R...View AnswerShow Answer

The schematic for a relay is typically shown on the outside of the relay.

Correct AnswerverifiedShow Answer

Other than measure voltage, current and resistance most DMMs [DVOMs] can also measure and test what other factors?

Correct Answerverifiedfrequencyduty cycle...View AnswerShow Answer

Correct Answer
verified
A short circuit has ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Use a jumper wire with an automatic rese...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The probe measures t...
View Answer

Correct Answer
verified
Test for continuity between the coil ter...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Root mean square
A R...
View Answer

Correct Answer
verified

Correct Answer
verified
frequency
duty cycle...
View Answer