what happens in a genarator when rotor supplied with ac instead of dc

3 Answers  

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what is the difference between E.L.C.B & R.C.C.B?

2 Answers  

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Q: How to calculate Transformer losses , tell us by Formula.

0 Answers  

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why choke is provided in the centre of the tube light?

3 Answers  

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if we want to convert the two 12 V DC batteries in parallel for UPS ? what would be the result ? which is better for a UPS , connect two batteries in series or connect them in parallel ?

2 Answers  

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Why insulation layer of a High Voltage cable is more than a current carrying cable?

3 Answers  

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Write down the brushes of a de machine.

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how we arrange the hv side with delta connection in case 33/11kv of transformer.

0 Answers   Jindal,

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please send me latest & previous years question papers for IOCL Technical level questions

0 Answers  

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why AC voltage source are generate as 50 Hz ?

4 Answers  

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in communication what is the role of elelctrical engineer?

3 Answers   Quippo, Reliance,

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What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

0 Answers   CEB,

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