Which factor decide the colour of the light emitted from a Led?

3 Answers  

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why do we prefer alternating current in india where as in USA prefers DC?

3 Answers   Bhel, GMR, Texmo,

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WHAT IS THESETTING CALCULATION FOR THE RELAY?

1 Answers  

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if dc is better then ac...then why we are perfering ac over dc?eg:at home?

2 Answers  

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why the perameters of secondary circuit are more important then that of the primary circuit of induction motor?

0 Answers  

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What is the speed of 3 phase IM(Induction motor) at no load? How will the Motor meet the increased load(Explain through fundamental)?

2 Answers  

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how to setting Load amps tripping time and extra settings for load Transformer protection relay with RMU panel using C&S model relay..?

0 Answers  

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How can we calculate the efficiency of a Running (On-Load) Motor ? What parameters are required and what is the method ?

0 Answers  

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explain the details about vaccum circut breaker and advantages?

4 Answers   CPCL, Unisol,

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If a motor of 30KW rating &200 mtrs distance from feeder give me the cable size selection calculation?

0 Answers  

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What is SMPS,How does it works?

4 Answers   Bharti, TCS,

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What is a pulse transformer?? Can it be called as a dc transformer??

1 Answers  

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