what is the advantage and disadvantage of billing in kwh and kvah by electricity board .

6 Answers   Nespak, NTPC,

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How can we calculate the cable size??? plz give the formula !!!!!

3 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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Whats the purpose of neutral earthing?

5 Answers   Electrical, Hindalco, TCS,

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which has more heat effect(dc or ac)

4 Answers   CCEL, TATA,

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Why we use cosine angle for calculating power factor not in sine angle ?

4 Answers  

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Shall we get electrical shock if we touch the positive terminal of a 230 volt dc supply?

22 Answers   Essar,

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what is the different between counterpoise earthing and pipe earthing?

1 Answers  

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How does numerical relay work?

1 Answers  

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what is difference between differential protection and distance protection and how we calculate the sloop?

5 Answers   OPS, Power Grid,

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what methods are used to improve power factor?

3 Answers  

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what happen when dc shunt motor field is sudden open in running condition

34 Answers   APGenco, Bhel, IIT, JMRC, TCS,

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