Answer / sakthivel perambalur

rail is all way negative and oht is positive supply ok

what's the reson that,Load is not same on VFD I/P and O/P Side.whenever DOL condition load is same I/P and O/P side.

1 Answers  

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In A.C systems, fuse is placed in phase-in order to disconnect the circuit during faulty condition. But, what is the reason for putting "LINK" in neutral istead of connecting through (same) wire.

3 Answers  

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what is power and what is watts detailed description and formulas

2 Answers  

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hou we find and calculate the maximum lode capesity of transforer?

1 Answers  

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

11 Answers  

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Whether it is possible to measure energy at the input of rectifier transformer (12 pulse with very high odd harmonics)

1 Answers  

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what the reson to use phase shift( angle) like (dyn11,Dd5 or Dy0)are usedin power and transsmison line

1 Answers  

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and gate circuit diagram,amplifier circuit diagram

1 Answers   NHPC,

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We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.

2 Answers   KPTCL,

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difference between over current and over load protection?

5 Answers   BARC,

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what will happen if instead of neutral we use earth wire as return conductor?if we can use ,then why we are not using in our day to day appliances?please justify the answer

11 Answers   NTPC, ONGC,

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what is the formula for calculating motor rating? Example: If we want to rotate a 1000 kg waight disc up to 100 RPM, which size motor will require?

1 Answers  

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