what is ups?how its works?and what is there in static switch how it works?

2 Answers   Bhel,

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Tell me about Simence PLC 'BLOCK'.How many types and what for.

1 Answers   Gurit,

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How do we calculate over and under frequency tolerance from generator data?

0 Answers   DPS,

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10 hp motor ,7.5 kw ,960 rpm, full load current 15.5, delta connection so how much take current no load trial time. any formula please give..... second question :- what is different between brekar control wiring and motor starter control wiring

1 Answers   MSP,

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you have a 2 tonne ac that operates for 2 hrs daily what will be you monthly bill (this is complete question asked nothing else was given)?

1 Answers  

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What is load boxes ?

0 Answers   AMIE, PEPL,

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I have 200 KVA Isolation Transformer for UPS input side. & ups was having 48% load, suddenly got short what will be the reason.

1 Answers   Mukand,

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why US countries maintains 110v and 60HZ

0 Answers  

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On 400 amp factory load how kvarh capacitors provide

0 Answers  

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WHICH TYPE OF TRANSFORMER IS USED IN POWER TRANSMISSION BASED ON TRANSFORMER CONNECTION ON PRIMARY AND SECONDARY SIDE

3 Answers  

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what is the difference between star and delta connection ? when we use each one ?what is the best ?

14 Answers   Amara Raja, Daikin,

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what is difference b/w bus duct & bus bar.

2 Answers  

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