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Automotive Technology

Trade & Technology

Quiz 16 :

General Electrical System Diagnostics and Service

Quiz 16 :

General Electrical System Diagnostics and Service

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When a circuit protection device [fuse, circuit breaker] opens due to higher than normal current, a short is the likely cause.
Free
True False
Answer:

Answer:

True

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The black DMM test lead always plugs into the COM input jack.
Free
True False
Answer:

Answer:

True

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High resistance in a circuit causes decreased current flow.
Free
True False
Answer:

Answer:

True

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A switch that is in the closed position should not have more than 300 millivolts voltage drop between input and output terminals.
True False
Answer:
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If rosin core solder is not available, acid core solder can be used as a substitute.
True False
Answer:
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All types of circuit protection devices can be checked with an ohmmeter or test light.
True False
Answer:
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The schematic for a relay is typically shown on the outside of the relay.
True False
Answer:
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When using a DMM to test resistance, the red lead is connected to the A jack.
True False
Answer:
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Technician A says electrical circuit resistance causes voltage drop. Technician B says high-resistance problems cause an increase in current flow. Who is correct?
Multiple Choice
Answer:
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A circuit is open when it is complete.
True False
Answer:
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Connecting an ohmmeter into a live circuit can damage the meter.
True False
Answer:
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An analog oscilloscope can freeze a captured signal for close analysis.
True False
Answer:
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Connecting an ohmmeter to a live circuit usually results in damage to the meter.
True False
Answer:
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An ohmmeter can be used to check for continuity.
True False
Answer:
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Technician A says uses an ohmmeter to measure resistance of a component. Technician B uses a voltmeter to measure voltage drop. Who is correct?
Multiple Choice
Answer:
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While discussing how to test a switch, Technician A says the action of the switch can be monitored by a voltmeter. Technician B says the continuity through the switch can be checked by measuring the resistance across the switch terminals using an ohmmeter. Who is correct?
Multiple Choice
Answer:
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Technician A says fuses and other circuit protection devices normally wear out. Technician B says to avoid future problems, replace a bad fuse with a higher ampere-rated fuse. Who is correct?
Multiple Choice
Answer:
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A wiring diagram shows the actual position of parts on a vehicle.
True False
Answer:
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A voltage drop test can find excessive resistance in a circuit that may not be detected using an ohmmeter.
True False
Answer:
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Analog meters should not be used to test electronic components.
True False
Answer:
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