If none of the detectors in a level measurement system are in contact with the measurement material, the system is described as __________.
A. displacing
B. inferential
C. noninvasive
D. resistive
Answer: C
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If a liquid expansion thermostatic trap blows steam, check for dirt or wear on the _____.
a. valve and seat b. entry orifice c. bimetallic strips d. plate
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Which of the following is NOT a part of a portable belt sander?
a. gear chuck c. handles b. belt rollers d. dust bag
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Mica and disc capacitors are used on:
A) Electronic circuit boards. B) Motor circuits. C) Power transmission lines. D) Heavy-duty power supplies.
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All of the following are inductive loads found in HVAC equipment except _____
a. solenoid valves b. relays c. fan motors d. crankcase heaters
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