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The twisting force used to turn a compressor’s crankshaft is called efficiency.

An electric motor’s speed is determined by the alternating current’s frequency and the number of magnetic field poles in the stator.

In a low-pressure motor control, the cut-out and cut-in pressures are set to maintain proper ____.

A time-delay fuse may allow a motor to be damaged from high current before the time delay is over.

Which of the following statements about the terminals of a current relay is not true?

If a thermistor’s resistance decreases as the temperature increases, the thermistor has a positive temperature coefficient.

The condition that exists when there is an unbroken path between two points in a circuit is called ____.

When the pressure inside an above-atmospheric-pressure element increases, it closes an electrical circuit.

____ turn electrical energy into mechanical motion.

Current-limiting fuses use temperature-sensitive resistors that close the motor circuit as temperature rises.