Answer / senthil

both are the rectifier,diode is conducted in forward
direction only,It opposes the reverse direction ,but Zenor
diode will conduct only in reverse bise, It wont conduct in
forward bise,we can use for Voltage egulator

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what about SAP/MRP regarding manufacturing of electric motors and all drives?

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tell me about eletrical contractor

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why transformer rating is given in kva?

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IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?

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1.what is difference between line,neutral and earth 2.IF single phase voltage is 230v ac and what should be the voltage between line to neutral,neutral to earth and earth to line

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