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True or False –
When the meter is set to AC volts, you can still read DC volts.
A clamp on meter is used to measure what?
You turned your meter on and the display is blank. What should you check for?
Pick the 2 correct answers.
2K on the resistance scale equals how many ohms?
When checking ohms, which connections should you put your probes into the meter?
What are the 3 parts that make up the transformer?
If the primary winding has 10 loops and the secondary winding has 5 loops, what would the voltage be?
How many amps can a 24 volt, 40 VA transformer handle?
In a ladder diagram, which statement is generally true?
When replacing a transformer, which of the following is true?
Select the 2 correct answers.
What is the primary difference between relays and contactors?
Review the parts of the relay labeled A, B, C and D.
Drag and drop the terms to its appropriate letter.
A
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B
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C
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D
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Drag and drop the correct term to the acronym and symbol
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Burnt contacts on a contactor are a sign of what?
What should you read for an ohms value for a normally closed contact with no power to the coil?
Drag and drop the wiring terminal to its proper function
24 V AC Power
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Heat
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Cool
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Indoor Fan
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Common
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What is the voltage you read at a typical residential thermostat terminal strip?
What does the mode switch do on a standard residential thermostat?
During a call for COOLING, where should you read 24VAC?
Select all that apply.
During a call for HEATING, where should you read 24VAC?
Select all that apply.
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