Which of the following sounds is LEAST-Likely to have a vibration of less than 120 Hz?
A. Boom
B. Buzz
C. Shake
D. Whine
Answer: D
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What are the three categories of changes?
What will be an ideal response?
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No-voltage drop-out or two-wire control circuit should indicate a possible ____ to the electrician, because a mechanically held closed pilot device could automatically restart the load motor when the power is restored.
a. safety concern b. power restart c. magnetic charge d. controlled condition
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The magnetic term that is equivalent to voltage is ________
A) flux density B) magnetomotive force C) reluctance D) current
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A complete circuit is often referred to as a(n) _____ circuit.
A. closed B. open C. shorted D. grounded
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