Why is the neutral point of a star connected winding of a motor not grounded?

1 Answers  

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How to calculate the breaker's short circuit current?

1 Answers  

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1 HP = how many Kva

5 Answers  

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for preparation of design note of 11 / 220 kV , 3 phase, 63 MVA transformer how can calculate or consider the iron losses and copper losses

1 Answers  

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what will hapen if secodery circuit is open of current transformer WHy neutral to ground trips when neutral touches the ground

1 Answers  

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how the grounding[earting] is achieved on ships.

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WHAT IS NORMAL VECTOR GROUP USED FOR DESIGNING OF TRANSFORMERS??

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Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

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what is maximum or Threshold value of current 7 voltage that a common man can withstand

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resistance switching is used in case of- ? a. air blast CB b. bulk oil CB c. minimum oil CB d. all types of CB

4 Answers   HCL, SSC,

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what is preventive maintenance? and what is predictive maintenance? and what diffrence both?

3 Answers   Volkswagen,

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hello everybody...i m an Elelctrical Engineering student.. i m in final year.. i m attending IOCL interview on 2nd aug. kindly let me know on wat subjects to concentrate more...any body who has attended the interview can help... others can also post their views... thankyou.

3 Answers  

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