The frequency of the current in a squirrel-cage rotor _____ as the rotor approaches synchronous speed.
A) increases
B) stays the same
C) decreases
D) is cut in half

Question

Quizplus · Accepted Answer

The frequency of the current in a squirrel-cage rotor decreases as the rotor approaches synchronous speed because the relative speed between the rotating magnetic field and the rotor decreases, leading to a reduction in the rate of change of magnetic flux through the rotor, which in turn reduces the frequency of the induced current.

The Frequency of the Current in a Squirrel-Cage Rotor _____