Answer Posted / sundar

The transformer losses depends on the current and voltage so the ratings of transform is kva not in kw

How to calculate multiplication factor in kva example 500kva ans pls ?

1394

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at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds

1350

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hi can any body send me syllabus of rrb electrical section engg... and past pepar also of any board...

2137

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What is relation between transmission lines & Communication lines ?

1699

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can you any one give exact mathematical relation between AC current and DC current?

1399

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Between educational qualification and practical work experience, give us a brief explanation on your practical experience in your past Endeavour that you performed well to the satisfaction of your past or present employer?

1793

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HOW THE OLTC TRANSFORMER SAVE ENERGY IN COMPARISON TO OFF LINE TRANSFORMER AND IS IT ECONOMICAL TO REPLACE THE OFF LINE TRANSFORMER TO OLTC TRANSFORMER

1718

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What is the real function of reverse power relay in generator panel while syncronising?

1609

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if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side

1394

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explain comutator action in detail.thanks

1739

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how to select the double earth conductor if 21A full load?

1565

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what is the pulse and audio frequency transformer? what is different between induction regulators and tap changing transformer?

1642

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What is the approximate value of stacking factor?

700

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armature winding of dc machine produce alternating emf then it convert in to dc by using commutator.But only we consider armature resistance why don't we consider inductive reactane effect?

1638

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What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?

1100

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