A(n) ____________________ system is a control system that is operated by less voltage than that applied to the equipment.
Fill in the blank(s) with the appropriate word(s).
low voltage control
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What type of draft system has no fans or mechanically produced draft?
A) Forced draft B) Natural draft C) Balanced draft D) Induced draft
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Cooperative extension agents only serve producers
Indicate whether the statement is true or false.
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What is the common hole size for a lockset?
A) 1 7/8" B) 1 5/8" C) 1 1/4" D) 2 1/8"
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The advantage of the ____ over a power transistor is that it can control a large current, dependent on an external circuit, with a small trigger signal.
A. JFET B. DIAC C. TRIAC D. SCR
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