Answer / tushar choudhuri

Rated interrupting time is the mean time for interruption of any current exceeding the rated interrupting current of the Breaker.The possible relaying time of modern high speed protection is 0.5 to 1,0 cycle.The breaker interrupting time of high speed modern circuit breaker is nearly 2 to 3 cycles.

Explain different types of d.c motors? Give their applications

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which is the most common harmonics 3rd,5th,7th affect the systegm

4 Answers  

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Hoe to calculate body earthing conductor size ?

1 Answers   IES,

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what is function and advantage of double delta winding in induction generator?

1 Answers  

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What will be the change in its efficiency and other parameters of a ONAN transformer if it changed to ONAF transformer ?

3 Answers   Tesla,

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What is dc current source?

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List examples of current sources?

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two transformers of the same type, using the same grade of iron and conducting material, are designed to work at same flux and current densities, but the linear dimension of one are two times of the other in all respects. The ration of kVA of the two transformer closely equal to................? options: 16, 8, 4, 2

2 Answers   Vizag Steel,

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Essential condition for parallel operation of two single phase transformer is that they should have same A polarity B kVA rating C voltage ratio D % impedance

1 Answers   wbsedcl,

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why dose not transformer not rotate ?

3 Answers  

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what is the speed of current

4 Answers  

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why generation voltages are 6.6kv or 11kv and why not some one give that stander that generation voltages are 5kv or 12kv?

1 Answers   AES,

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