what is the potential difference between line and earth?

11 Answers  

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Why iron core losses are constant at all loads in a transformer ?

1 Answers   GATE,

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I have 30KW Motor Starter Panel, System voltage is 480V, So i have to convert voltage 480 to 220V to give the contactor coil. How i can select control transformer, Which rating transformer i can use this panel, what is the procedure, please tell me.

2 Answers  

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how to calculate 'In'in a system?

2 Answers  

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5. What is PMG in Alternators?

11 Answers   L&T,

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does buccholz in a transformer use batteries

2 Answers  

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In explosive and polluted environments which type of motors do we use?

3 Answers   NTPC,

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HOW TO CALCULATE THE APFC Panel Design

1 Answers  

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For a Potential Transformer(PT), the primary neutral terminal must be grounded before energization. Why....? What will be heppend if we energize the PT without grounded the primary neutral point? Why..........?

2 Answers  

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different between grounding & earthing?

23 Answers   L&T,

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why the current is denoted by the letter 'i'

1 Answers  

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why transformer donot allow the dc?

17 Answers   ONGC,

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