Question: A three phase squirrel cage induction motor has a starting current of seven times the full load current and full load slip of 5%

A three phase squirrel cage induction motor has a starting current of

A three phase squirrel cage induction motor has a starting current of seven times the full load current and full load slip of 5% If an auto transformer is used for reduced voltage starting to provide 1.5 per unit starting torque, the auto transformer ratio (%) should be (A) 57.77 % (B) 72.56 % (C) 78.25 % (D) 81.33 %

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