By having a capacitor in series with the start winding of an induction motor:
A) The start winding polarity is reversed.
B) The start winding phase is shifted behind the run winding.
C) The run winding polarity is reversed.
D) The start winding phase is shifted ahead of the run winding.
D
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Common sources of ignition include electricity, sparking metal, heat-generating equipment, and failed _____.
a. electrical connections b. hydraulic connections c. pneumatic connections d. mechanical connections
As a new business grows, it tends to follow a ________ curve.
A. P B. S C. T D. J
Boards that have a thin rib on one side and a slot cut into the other are called
a. hinged c. notch-cut b. tongue and groove d. dovetail
Calculate the transformer ratio of the transformer in Problem 18.23 when it is used as a step-up transformer.
Problem 18.23 The high-voltage side of a step-down transformer has 800 turns, and the low-voltage side has 100 turns. A voltage of 240 VAC is applied to the high side, and the load impedance is 3 ? (low side). Find: a. The secondary voltage and current. b. The primary current. c. The primary input impedance from the ratio of primary voltage to current. d. The primary input impedance.