wats the procedure to calculate no of batteries for ups?

1 Answers  

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main difference between ac and dc?

0 Answers   Classic Network,

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how can we change the supply frequency?

8 Answers   Areva,

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DG SET BLOCK DIGRAM

0 Answers   L&T,

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why PT transformer primary r the grounded?

2 Answers   L&T,

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Name two low frequency oscillators?

0 Answers  

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what is purpose of using reactor in substations.

20 Answers   Heavy Engineering Corporation Ltd HECL,

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Why alternators are rated in KVA?

12 Answers  

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what are the settings is there for ABB REM543 Generator Protection Relay

1 Answers  

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Among the following Which is vector quantity? a. Flux b. permitivity c. flux density d. magnetic intensity

2 Answers  

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is harmonic useful or it distort the alternating quantity?

2 Answers  

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Hi.I want to ask how to calculate contactor rating current? for example I have 460 V , 100 A (induction motor) calculate contactor rating current?

2 Answers  

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