Which speed control method can only be applied to squirrel cage type – McqOptions

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1.	Which speed control method can only be applied to squirrel cage type induction motors?
A.	Multiple Stator winding method
B.	Rotor rheostat speed control method
C.	Pole amplitude modulation method
D.	Frequency control method
Answer» B. Rotor rheostat speed control method

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