WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION?

5 Answers   L&T,

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what is the size of ht cable of 33kv ht line and transformers ratings are 2.5mva and 5.5mva.please send formula also.

1 Answers  

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why generating voltages are of 11kv 33kv 22kv of 11 multiples

5 Answers  

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Are Refrigerators & Deep Freezers the Inductive load ? How to calculate the Power Factor & hence the Output Power for them ?

0 Answers  

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How can i get my certificate of competency as an electrical supervisor? I have complicated my B.Tech from Uttarakhand technical university this year (2012).

0 Answers   ONGC,

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What is sinusodial & non sinsodial current

1 Answers  

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I need the recommended size for a 3 phase transformer at 13.8 KV Primary and connected loads of 3000 kVA at 4200 volts and 2375 kVA @ 480 volts AC.

0 Answers   Duke Energy,

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why synchronization done in clockwise direction?

12 Answers   Hindalco, NTPC,

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what efficiency of transformer at 100% load

0 Answers   Emerson,

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xplain in detail d pr. of synchronous motors? why syn. generators r used for the production of electricity?

4 Answers  

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why the rotor current becomes in steady state during high slip region? please verify with equations.

0 Answers  

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why generally transformer are in star to delta or delta to star used?

8 Answers   ABB,

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