Some units may be designed to move enough air across the heating elements so that they do not glow.
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Q11: The limit switch is used on the
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Q15: Radiant heat is transferred by _.
A) ultraviolet
Q17: An electric heating unit that utilizes ductwork
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Q19: Which of the following elements is not
Q20: A 10 Kw heating element, operating on
Q21: How is the formula QS = 1.08
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