A induction motor is started in first case by autotransformer with 3/4thtapping and is second case by a star delta starter. What is the ratio of supply current at starting of first case to second one upto two decimal placesCorrect answer is between '1.65,1.75'. Can you explain this answer? - EduRev Electrical Engineering (EE) Question

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A induction motor is started in first case by autotransformer with 3/4^th tapping and is second case by a star delta starter. What is the ratio of supply current at starting of first case to second one upto two decimal places

Correct answer is between '1.65,1.75'. Can you explain this answer?

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A induction motor is started in first case by autotransformer with 3/4...

In the case of autotransformer starter, per phase starting current, I_st = x²I_sc
= (0.75)²I_sc
= 0.5625 I_sc
For star delta starter,

= 0.33 I_sc
The ratio of first case to second is

= 1.6876
≈ 1.69

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A induction motor is started in first case by autotransformer with 3/4thtapping and is second case by a star delta starter. What is the ratio of supply current at starting of first case to second one upto two decimal placesCorrect answer is between '1.65,1.75'. Can you explain this answer?

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A induction motor is started in first case by autotransformer with 3/4thtapping and is second case by a star delta starter. What is the ratio of supply current at starting of first case to second one upto two decimal placesCorrect answer is between '1.65,1.75'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A induction motor is started in first case by autotransformer with 3/4thtapping and is second case by a star delta starter. What is the ratio of supply current at starting of first case to second one upto two decimal placesCorrect answer is between '1.65,1.75'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A induction motor is started in first case by autotransformer with 3/4thtapping and is second case by a star delta starter. What is the ratio of supply current at starting of first case to second one upto two decimal placesCorrect answer is between '1.65,1.75'. Can you explain this answer?.

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