what is mutual induction principle?

6 Answers  

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why we need the starters for motors

1 Answers   L&T,

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Brief difference btween aluminium & copper conductor

2 Answers  

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can we use ordinary transformer in place of autotransformer?give reasons also

1 Answers  

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Wtat is vaccum currcuit breaker.define with cause of used.and where be use it Devise .

1 Answers  

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What is WLD System????

3 Answers   Emerson, HCL, Honeywell, Tata Communications,

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Which of the following are the important limitations of rod gap surge arresters? 1. They are not capable of selling off power frequency follow up current. 2. After a discharge, the rods are destroyed completely. 3. Performance is affected by climatic conditions. Use the following codes for selecting the correct answer. Codes: (a)1, 2 and 3 (b)1 and 2 (c)2 and 3 (d)1 and 3

1 Answers  

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How we can calculate the Amps for the cable Ex:- For 1sqmm wire how many amps we can draw (calculation)

0 Answers   TATA,

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What is the safety protection? Name the protections of Transformer?

1 Answers   HSL,

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why middle phase should used for earth fault and other phases used for over current in overcurrent and earth fault relay?

7 Answers   ABB, ONGC,

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what the different between earthing and grounding?

4 Answers  

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hello everybody. what does an abnormal stator winding impedance or dc resistance show? thanx

0 Answers   Ansaldo,

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