what is the difference between current rating and breaking current of an MCCB? and for a known load how to calculate the current rating of a MCCB?

1 Answers   HPL,

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what will happen if dc machine are supplied by ac source??

2 Answers  

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What is meant by electrical speed?

1 Answers  

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why two wires are wound alternately to each other in single phase wires?

1 Answers  

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How would we calculate the no of earthing pits required for motor /panel

5 Answers   APGenco, National Engineering Industries, Practical Viva Questions,

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how does oil cools the transformer

3 Answers   HBL Power Systems,

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What happens if we give ac supply to dc shunt and series motors individually

4 Answers   Essar,

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Find defination of KVA convert in to KW.

4 Answers   ABB,

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minimu size and length of gi earth pipe

2 Answers  

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which types of relay used in acb and vcb?

0 Answers   IBM,

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7. A resistance of 30 ohm is connected across 240v supply. If a resistance R ohm is connected in parallel with 30ohm resistor across the same supply, the current drawn becomes triple of original one The unknown resistor R is

2 Answers  

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I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???

0 Answers   RRB,

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