When a vector drive holds the motor in a stationary position, the stator flux __________.
A. is turned on and off at a rapid rate of speed
B. is held constant
C. lines are alternated in opposite directions at a high rate of speed
Answer: B
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Two insects that devour huge numbers of insects are
What will be an ideal response?
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When force is applied to an object, all of these conditions related to the object indicate that work has been accomplished EXCEPT:
A. Lifted B. Slid C. Redirected D. Stationary
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____ ventilation removes moisture, odors, and pollutants directly at the source. Bath exhaust fans and kitchen range hoods are the most common examples.
A. Indirect B. Partial C. Direct D. Spot
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The term pH refers to the unit of measure which describes the degree at which a solution is __________.
A. acidic B. alkaline C. both a and b
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