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- Q654 - Electrical, Electronic, & Control Engineering
58. How is the difference between the synchronous speed of a three-phase induction motor and its operating speed correctly expressed?
The difference between a three-phase induction motor's synchronous speed and operating speed is termed slip. This difference exists because the rotor always rotates slower than the synchronous speed under load. Slip can be expressed as a speed difference or a fraction/percent of synchronous speed, but the defining term is slip.
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