how to distinguish between ac motor and dc motor without seeing name plate of it.only seeing its getup look

3 Answers   Nahar, Siemens,

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Ratings of power transformer,Distribution transformer.

0 Answers  

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what are the basic insulation levels & what its Unit

0 Answers  

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how can i select the cable ratings

4 Answers  

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Can any one give an explanation about rating factors of cable? if we are laying the cable on the air with an temp 15 degree then rating factors will be 1.15 and if we are laying the cable on the air an temp 60 degree then rating factor will be 0.76 please describe it and what is the difference between rating factor and derating factor?

0 Answers  

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How much resistance between neutral earthing and body earthing of Power transformer?

1 Answers  

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what is the power factor

13 Answers   Heidelberge Cement,

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how do you test tachos and servos

0 Answers  

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Why does an induction generator is preffered as compared to synchronous generator in especially a wind energy power production project?

0 Answers  

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What is the vector group of a transformer,how can it be found out?

0 Answers   Jindal,

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What is an iron loss or core loss pi?

0 Answers  

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On which side, taps are provided in tap changing transformers and why?

2 Answers  

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