If a contactor need to replace with faulty one. what I want to check?

2 Answers   Bhel,

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what is the thumb rule to know current carrying capacity of copper conductors of different size.

1 Answers  

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what is the differnce between ac and dc?

5 Answers  

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How phase to phase voltage comes 440V.

0 Answers  

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Vibromotor 252MV 1/4HP2P..what is mean by 252MV?

0 Answers  

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1. Why transfomer reting in KVA and Motor in HP

11 Answers   AirIndia, Jindal, Mind Tree,

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how many type of of electrical fuse please explan?

9 Answers  

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keeping in view of parallel operation which of the 3 phase transformer connection are possible? a)delta-delta to delta-star b) delta-delta to star-delta c) star-star to delta-delta d) delta-star to star-delta

4 Answers   Ecil, Siemens,

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what is tertiary winding in transformer?What is its purpose?

18 Answers   Bhel,

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What is the difference between MCB and Earth MCB? What is the working principal of MCB?

2 Answers  

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When do you use a VFD motor?

1 Answers  

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Why current transformers are rated in BURDEN instead of VA?

4 Answers   Bhel,

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