what are the importance of earthing?list different types of earthing.

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why transformer is rated in KVA ?

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Hello Guys !! i want to rrb section engineer electrical(signal) previous model papers? any body help me?

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Trafo ratio is 11kV/6.6kv,Vector group is YND11. What will be the effect if secondary is used for earthed system.

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What are the different parts of Alternator and how it works?

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1.how many types of relays? 2.difference between ATS& STS?

0 Answers   L&T,

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Why current shoots up in the secondary on the knee point voltage during saturation test of CT? How core saturation effects the secondary current (while the primary side is open)? What the logic behind this?

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what is power factor?

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while selecting transformers for 33 kva feeder normally we ask for 33/433 kv why not 33/415

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if we use contactor & MCCB both in a feeder.in this feeder rating of contactor is higher or lower or same of MCCB rating & why?

1 Answers  

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what is difrent between earthing and ground

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how the inner and outer body is separated in aircrafts?

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