how to select the mpcbs and contactor for 3 phase 30 hp star delta motors.for plc control.and tell me the calaculation for future use.

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How many speed of dg start motor for engine starting time

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WHICH SUPPLY IS BETTER FOR 4 MW LOAD. 1)TO TAKE NEARER AVAILABLE 11 KV SUPPLY OR 2)TO TAKE 33 KV SUPPLY WHICH IS AVAILABLE AT 10 KM DISTANCE BY INVESTING NEARLY 50-60 LACKHS

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Difference between transmission line and cable?when ever a large water channel has to crossed it is easier to use cable then transmission line why?

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ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

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1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

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what is the unit of electricity????????????

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How to convert KW to KVA or KVAR OR kvar/kva to kw?

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

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what is use of reactive power in ac ckt.

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how many types erthig

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how do i calc busbar size for a rated current?

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