When troubleshooting a residential heating system, the technician reads 24 volts at the gas valve on a call for heat, but the gas valve does not energize. What would be the most likely problem?

A. defective gas valve
B. defective thermostat
C. defective transformer
D. blown low-voltage fuse


Answer: A

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Technician A says the PCM supplies power and ground to magnetic pulse generators. Technician B says the PCM supplies power and ground to Hall-effect sensors. Who is correct?

A. Technician A B. Technician B C. Both A and B D. Neither A nor B

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As a result of reforms initiated by Czar Alexander II, Russian literacy increased from 7 percent to approximately what percentage of the population by the 1890s?

a. 15 percent b. 20 percent c. 30 percent d. 50 percent

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When dealing with an irate customer that wants to get things off their chest which type of question should you start the conversation with? Explain your answer

What will be an ideal response?

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____________ for refrigerant piping come in sizes up to about 2 1/8" in size and are used for larger applications.

Fill in the blank(s) with the appropriate word(s).

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