The __________ is an essential tool used by the HVAC/R service technician to troubleshoot and evaluate the electric components of an air conditioning, heating or refrigeration system.

A. clamp-on ammeter (COA)
B. carbon monoxide tester (CO tester)
C. u-tube manometer (UTM)
D. volt-ohm milliammeter (VOM)


Answer: D

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Answer the following statement true (T) or false (F)

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When plugging, as a general rule, the reversing contactor is of a larger size than the forward contactor because of the increased plugging current.

Answer the following statement true (T) or false (F)

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Although connecting components to a terminal strip generally involves using a greater amount of wire, it can be the less expensive method when it is necessary to ____________________ the circuit.

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

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