In a d.c current, the power is the product of voltage and current. This relationship does not always apply to effective(r.m.s) values in an a.c circuit. Explain the reason for this.

2 Answers  

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List the power rating of any 5 important electrical appliances used in houses.

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why the tapping of transformer on ht side??????

12 Answers   CTS, OPTCL, Visa Steel,

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how can we say that stator magnetic field rotates with synchronous speed?can we derive?

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In a transformer ,when voltage decreases current increases. but this is a violation of oms law.why?

15 Answers  

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how much current does 3ph a.c & d.c motor drawn.Plz. provide formula with example.

5 Answers  

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why we are maintain phase to phase clearence

4 Answers  

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why transformer comes only in standard rating like 11kv,33kv,66kv....and not like 33.33kv and so on?

3 Answers  

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EHV current carrying parts need to have smooth finish,then how can a 245kv GIS with emery finish can run so long?

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what is ideal insulator. what are its parameter. Is poecelain insulator comes under this category.

3 Answers  

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Differentiate between real and apparent power?

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should %impedance be high or low in a power transformer? if so why?

0 Answers  

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