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Q#1 Induction Machines GATE EE 2024 MCQ +1 mark -0.33 marks

A three phase,  pole induction motor runs at . The stator copper loss, core loss, and the rotational loss of the motor can be neglected. The percentage efficiency of the motor is

92

94

96

98

Explanation:

 

 

 Losses are ignored but we cannot ignore rotor copper losses. Since there are no friction and windage losses the mechanical developed power is same as output power.

Since, stator losses are ignored the input power is same as air gap power.

  

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