GATE EE 2023 Set 1 — Question 16
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Electrical Machines → Single-Phase Induction Motors → Double Revolving Field Theory
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Question
A 10-pole, 50 Hz, 240 V, single phase induction motor runs at 540 RPM while driving rated load. The frequency of induced rotor currents due to backward field is
Correct answer
(B) 95 Hz
Solution
1.Calculate the synchronous speed ():
2.Calculate the forward slip ():
3.Calculate the backward slip ():
In a single-phase induction motor, the backward field rotates at . The slip with respect to the backward field is:4.Calculate the frequency of rotor currents due to the backward field ():
Therefore, the correct option is (B).Continue learning with Success Tracker
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