If a rectangular wave's pulse width is 50 ?S and its frequency is 4 kHz, its duty cycle is ________
A) 98.75% B) 80% C) 1.25% D) 20%
D
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When jogging with a control relay on a reversing starter, while the relay is energized, ____.
a. the reversing jogger becomes operational b. both the forward and the reverse starter will be de-energized c. both the forward and the reverse starter will also remain energized d. either the forward or the reverse starter will also remain energized
The tool that would MOST-Likely be used to apply a nondirectional finish to the face of a finished rotor is:
A. a rotating sander B. a blowgun C. a caliper D. pliers
Footings and other features marked with a reference symbol, called a ____ symbol, are to be used as reference points for other dimensions.
A. datum B. reinforcement C. dimension D. stepped
The ____ is a thread that fits and seals tightly.
A. Metric thread B. Whitword thread C. Unified thread D. American National thread E. none of the above