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What is the function of interposing current transformer?

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Which types of following motors are most efficient?

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how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you

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How to clear BHEL written test exam.....anyone having experience pls refer me the link were i can get BHEL question papers....

1 Answers   Bhel,

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How to select the rating of a CT used for REF protection. The rating can be of equal rating of Phase current or neutral current rating

2 Answers   UltraTech,

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Main advantage of auto transformer over two windings transformer is that A it needs no cooling B it uses only one winding C core losses are reduced D it has simple construction

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What is the different between feeder & bus?

3 Answers   IOCL,

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How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?

0 Answers   HAL,

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why we use 25 kv in railway .not 11kv, or 33 kv

2 Answers   ISRO,

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How many types of protection relays are there based on the characteristic?

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Dear sir, I completed DECE In the year 1995.Now i am working in a private company from last 10 years as an Electrical supervisor.The company having a 1000 KVA transformer.Now i try to apply "C" Licence. I am eligible or not.If not eligible,pls give solution.

0 Answers   Balavigna,

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if we give connection of 100watts bulb through a single phase energy meter ,the disc of a meter rotates why it happens?

1 Answers  

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