I have a 600VA UPS for computer only. It holds for 20minutes only. 1. Can it be upgraded for longer period.? 2. Can it be used for one ceiling fan and a tube light? If yes, how to upgrade?

11 Answers  

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Can you use step up generator transformer of voltage ratio 16.5kv/420kv in place of step up generator transformer 15.75kv / 420 kv

1 Answers  

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Why heat produce in AC machine higher than DC machine?

2 Answers  

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how to calculate short circuit calculation of the transformer by usuing the percentage impedence? formula needed.

2 Answers   L&T,

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In a star to star transformer can we use a common neutral for both star connected primary and secondary

1 Answers  

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What is floating earthing?

2 Answers   Equate,

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what type of motor is used in fan

6 Answers  

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wat is the importance of reactive power in power generation.....if it is zero means wat will happen to system........

22 Answers   Bhel, Jindal,

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what is the size of cable for 15kw motor and 85 meter cable length using with vfd

0 Answers  

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if there is nutral in phase why we use earthing wire and grounding? even at fault condition the fault current flows to neutral (it is a lower path)

1 Answers  

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how can we calculate cable size

1 Answers  

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How can we calculate the rating of a cable with formula?

2 Answers   TATA,

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