Difference between ups

32 Answers   Emerson, Tata Power,

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why lightining is not available in swith yards?

1 Answers  

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whats is MARX CIRCUIT?

1 Answers  

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Batteries used for electrical energy storage are a. Laclanche cells b. Edison cells c. Lead acid cells d.any of the above

0 Answers  

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What is on line ups and off line ups?

2 Answers  

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Difference between SFU & FSU with advantantages & drawback?

1 Answers  

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why we used to transmitt the power at higher voltage why not at lower voltage

8 Answers  

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why we used stone chips under the transformer area..

2 Answers   SSC,

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I have been using an 600VA with 0.6 p.f UPS with my desktop which has 450W power supply unit. Can anyone explain how can this happen . Because the output of the UPS is 360W (600*0.6) (<450W)

0 Answers  

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I have 30KW Motor Starter Panel, System voltage is 480V, So i have to convert voltage 480 to 220V to give the contactor coil. How i can select control transformer, Which rating transformer i can use this panel, what is the procedure, please tell me.

2 Answers  

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How can we calculate the capacitance of generator?

1 Answers  

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What do you mean by passive circuit elements and why these are called passive?

0 Answers  

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