Question 1

Which of these is safe for use in circuits with electronic components?

Accepted Answer

A)  LED test light 
B)  Continuity tester 
C)  Both A and B 
D)  Neither A nor B 
A)  LED test light 
B)  Continuity tester 
C)  Both A and B 
D)  Neither A nor B A

Question 2

An ohmmeter should be connected to the circuit or component being tested ________.

Accepted Answer

A)  in series 
B)  only when no power is flowing (electrically open circuit) 
C)  in parallel 
D)  Both B and C 
A)  in series 
B)  only when no power is flowing (electrically open circuit) 
C)  in parallel 
D)  Both B and C D

Question 3

Which term is used to describe the resolution of a meter?

Accepted Answer

A)  Counts 
B)  Digits 
C)  Both A and B 
D)  Neither A nor B 
A)  Counts 
B)  Digits 
C)  Both A and B 
D)  Neither A nor B C

Question 4

When selecting a meter, percentage accuracy ratings that are ________ indicate more precise meters.

Accepted Answer

A)  lower 
B)  blank 
C)  neutral 
D)  higher 
A)  lower 
B)  blank 
C)  neutral 
D)  higher

Question 5

The internal resistance of any meter is only effective if the meter is set on the ________ scales.

Accepted Answer

A)  ammeter 
B)  ohmmeter 
C)  voltmeter 
D)  None of these 
A)  ammeter 
B)  ohmmeter 
C)  voltmeter 
D)  None of these

Question 6

When working on a hybrid vehicle, which type of meter is recommended?

Accepted Answer

A)  CAT II or CAT III 
B)  CAT III or CAT IV 
C)  CAT I or CAT II 
D)  Any of these would be OK 
A)  CAT II or CAT III 
B)  CAT III or CAT IV 
C)  CAT I or CAT II 
D)  Any of these would be OK

Question 7

Which device illuminates a different color when connected to power or ground sides of a circuit?

Accepted Answer

A)  LED test light 
B)  Logic probe 
C)  Both A and B 
D)  Neither A nor B 
A)  LED test light 
B)  Logic probe 
C)  Both A and B 
D)  Neither A nor B

Question 8

kHz is a unit describing what property?

Accepted Answer

A)  Diode bias 
B)  Continuity 
C)  Frequency 
D)  None of these 
A)  Diode bias 
B)  Continuity 
C)  Frequency 
D)  None of these

Question 9

A 12 volt test light is a good tool for testing voltage levels.

Accepted Answer

A) True 
 B)False

Question 10

Digital meters for automotive testing should include ________.

Accepted Answer

A)  DC amps up to at least 10A 
B)  diode tester 
C)  Both A and B 
D)  Neither A nor B 
A)  DC amps up to at least 10A 
B)  diode tester 
C)  Both A and B 
D)  Neither A nor B

Question 11

When interpreting meter readings in autoranging mode ________.

Accepted Answer

A)  convert the reading prefix to base units if needed 
B)  note the prefix indicated by the meter 
C)  Both A and B 
D)  Neither A nor B 
A)  convert the reading prefix to base units if needed 
B)  note the prefix indicated by the meter 
C)  Both A and B 
D)  Neither A nor B

Question 12

With which signal pattern is the RMS reading the same as the average reading?

Accepted Answer

A)  Square wave 
B)  Nonsymmetric 
C)  Sine wave 
D)  None of these 
A)  Square wave 
B)  Nonsymmetric 
C)  Sine wave 
D)  None of these

Question 13

When measuring resistance, a reading of OL on the DMM indicates ________.

Accepted Answer

A)  an open circuit 
B)  a defective meter probe 
C)  continuity of the circuit 
D)  None of these 
A)  an open circuit 
B)  a defective meter probe 
C)  continuity of the circuit 
D)  None of these

Question 14

To prevent blowing the meter fuse in a DMM ________.

Accepted Answer

A)  install a fuse in line with the meter lead 
B)  never test resistance of an energized circuit 
C)  Both A and B 
D)  Neither A nor B 
A)  install a fuse in line with the meter lead 
B)  never test resistance of an energized circuit 
C)  Both A and B 
D)  Neither A nor B

Question 15

When using a DMM, the black lead usually goes in which port?

Accepted Answer

A)  10A 
B)  COM 
C)  VDC 
D)  None of these 
A)  10A 
B)  COM 
C)  VDC 
D)  None of these

Question 16

Which is the highest reading?

Accepted Answer

A)  38.7 mV 
B)  0.1 V 
C)  0.387 V 
D)  0.01 V 
A)  38.7 mV 
B)  0.1 V 
C)  0.387 V 
D)  0.01 V

Question 17

This DMM is set to read ohms. The reading shown means ________.

Accepted Answer

A)  a faulty meter display 
B)  Insufficient information 
C)  an open circuit 
D)  zero resistance 
A)  a faulty meter display 
B)  Insufficient information 
C)  an open circuit 
D)  zero resistance

Question 18

Which type of ammeter can measure current when clamped around a conductor?

Accepted Answer

A)  Selective 
B)  Reluctive 
C)  Inductive 
D)  None of these 
A)  Selective 
B)  Reluctive 
C)  Inductive 
D)  None of these

Question 19

A fused jumper wire can be used to power or ground a circuit during testing.

Accepted Answer

A) True 
 B)False

Question 20

The ability to measure AC current is useful when diagnosing ________.

Accepted Answer

A)  alternator function 
B)  resistance in a battery cable 
C)  starter motor operation 
D)  None of these 
A)  alternator function 
B)  resistance in a battery cable 
C)  starter motor operation 
D)  None of these

Exam 3: Circuit Testers and Digital Meters

Which of these is safe for use in circuits with electronic components?

An ohmmeter should be connected to the circuit or component being tested ________.

Which term is used to describe the resolution of a meter?

When selecting a meter, percentage accuracy ratings that are ________ indicate more precise meters.

The internal resistance of any meter is only effective if the meter is set on the ________ scales.

When working on a hybrid vehicle, which type of meter is recommended?

Which device illuminates a different color when connected to power or ground sides of a circuit?

kHz is a unit describing what property?

A 12 volt test light is a good tool for testing voltage levels.

Digital meters for automotive testing should include ________.

When interpreting meter readings in autoranging mode ________.

With which signal pattern is the RMS reading the same as the average reading?

When measuring resistance, a reading of OL on the DMM indicates ________.

To prevent blowing the meter fuse in a DMM ________.

When using a DMM, the black lead usually goes in which port?

Which is the highest reading?

This DMM is set to read ohms. The reading shown means ________.

Which type of ammeter can measure current when clamped around a conductor?

A fused jumper wire can be used to power or ground a circuit during testing.

The ability to measure AC current is useful when diagnosing ________.

The Diagnostic Process

Gasoline, Alternative Fuels, and Diesel Fuels

Oscilloscopes and Dsos

Engine Systems

In-Vehicle Engine Service

Valve Train and Variable Valve Timing Diagnosis

Engine and Misfire Diagnosis

Can and Network Communications

Onboard Diagnosis

Global Obd Ii and Mode 06

Immobilizer Systems

Starting and Charging System Diagnosis

Ignition System Operation and Diagnosis

Temperature Sensors

Throttle Position Tp Sensors

Map and Maf Sensors

Electronic Throttle Control Systems

Oxygen Sensors

Fuel Trim Diagnosis

Fuel Pumps, Lines, and Filters

Fuel-Injection Components and Operation

Gasoline Direct-Injection Systems

Fuel-Injection System Diagnosis and Service

Electronic Transmission Controls

Vehicle Emissions Standards and Testing

Emission Control Devices Operation and Diagnosis

Module Reprogramming

Symptom-Based Diagnosis

Filters