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

3 Answers   Bhel, GMR, Texmo,

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Which of the following can be operated at higher frequencies ? -SCR -MOSFET -IGBT

4 Answers  

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what is the Transformer Impedence?How can calculate?

0 Answers  

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Please tell me what is the difference between online UPS & OFF line UPS?

2 Answers   HAL,

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How many types oil using in transformer ? How many letars using in transformer..?

0 Answers   TATA,

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What are the probable causes for failure of heating elements

4 Answers   BARC,

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why is only master neutral contactor is made to switch in synchronization of dg sets

4 Answers   Honeywell,

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A 40 kva transformer has a core loss of 400W and a full load copper loss of 800W. What is The proportion of full load at maxmimum efficiency?

1 Answers  

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why core losses and copper losses does not depend on power factor?

5 Answers  

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Mention what are the different colors on wires indicates?

0 Answers  

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What is the scale analysis for condensor of HVAC system

3 Answers  

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What is the rating of your substation and what are the different types of substations?

5 Answers   Bhel, NTPC, UPPCL,

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