Which single-phase AC motor contains a start winding, run winding, and a centrifugal switch?
A. repulsion-start/induction-run
B. capacitor run
C. split-phase
D. universal
Answer: C
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A pipeline is to be laid in a trench where it will have to pass around a concrete caisson. The set is 20 feet, the run is 34 feet 8 inches; the angle is _____ degrees.
a. 22.5 b. 30 c. 45 d. 60
Mr. Allison has 895 acres of farmland. Eighty-eight percent of the farmland is planted in grain. Fifty-five percent of the grain planted is corn.
a. How many acres are in grain? b. How many acres are in corn?
If the feedback resistor of an inverting amplifier with an ac input opens, the output is
A) a dc value equal to the supply voltage B) a square wave C) a triangle wave D) zero
If three 2.2 k? resistors are connected in series across a 50 V source, PT equals ________
A) 402 mW B) 379 mW C) 52.08 mW D) 104.2 mW