What is the typical power circuit configuration of a VVVF Drive ?

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what is the type of starter used in tube light?

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how to calculate ups and battery rating

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How can we parallel two transformer with vector gorup YNd11 and YNd1?How is connection two transformer GT?

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How earthing/grounding done in aeroplanes and ships.

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HOW EFFICIENTLY LOAD IS SHARED BETWEEN ALTERNATORS

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There is 15 KVA UPS using for single phase load.And 30 batteries of 12 V, 100 Ah are connected in series. Load is taking 15 A current.What will be the back up power for this UPS on same load?

1 Answers   BS, Dynamic Software,

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Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.

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i have done my b.tech in 2009 .still hunting for a job...wat shud i answer if intervevwr asks..(what u have done 1yr)

1 Answers   TATA,

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what is anti-pumping relay and the significance of it in a switcgear cb control system?

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Dear sir/mam Iwant complete details of Naintenence of 33kv/433v Transformer having 1250 KVa

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which type of capacitor store high amount of energy for long time ? ( polarized or unpolarized )

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