Exam (elaborations)
HVAC CONTRACTOR EXAM QUESTIONS AND ANSWERS
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An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter - ans-voltmeter This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and control superheat A. automatic expansion valve B. thermostatic expansion valve C. low side float D. schraeder valve - ans-thermostatic expansion valve when installing a reversing valve on a heat pump, how many brazed joints should be made? a. 3 b. 5 c. 4 d. 2 - ans-4
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- April 5, 2024
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- Written in
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hvac contractor exam questions and answers
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