What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?

0 Answers   Jindal Steel and Power,

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Why Ac Systems Are Preferred Over Dc Systems?

0 Answers   ABB,

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sir, i want to know the calculation for find rated current for cable sizes.(both copper & aluminium) with examole. please sir for example: 35sq.mm al.cable is withstands for how many amps? is suitable for 45kw motor?

5 Answers   L&T,

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TRANAFORMER RATING 500 KVA,33KV/433, SECONDARY SIDE SWITCHED ON ONLY CAPACITOR LOAD 140 AMS, PRIMARY SIDE HOW MUCH VOLTS INCREASE?

1 Answers   BPL,

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How we calculate airgap between phases & terminal box of the transformer? any formulae.

1 Answers  

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which motor will u use in refinaries?

1 Answers   IOCL,

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What is EPBX????

3 Answers   Emerson,

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what is the potential difference between line and earth?

11 Answers  

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what are FM 200 systems? why it is useful for electrical systems ?

3 Answers  

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what is 11kv cable

1 Answers   bscpl,

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How impulse levels are calculated that for 11kV impulse is 75kvp, for 24kV impulse is 125kvp ?

0 Answers   L&T,

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what is the advantages og idmt relay over magnetic relay??

0 Answers   Bhel,

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