What is the difference between CT for protection and Ct for metering?

16 Answers   BirlaSoft,

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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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is high voltage or high current is danger

16 Answers   L&T,

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which type of ICs can be used in resonant power converter?

1 Answers  

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What the difference between three phase contactor (coil 110vac) & three phase SSR (control voltage 110Vac)? May I use contactor in place of SSR?

0 Answers  

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How can we measure MVAR of a 3 phase transformer.....???

1 Answers   JLL, UPPCL,

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how can we avoid magnetostriction in transformer?describe the suitable methods.

3 Answers   Bhel,

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how many minutes or seconds taken by the transmission of electrical power from generating end to distributing end?

3 Answers  

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how hydrogen cooled alternator undergo maintanence ? that is hydrogen when come in contact with air can result into explosions .

0 Answers   DVC,

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What is Ton Capacity of Air Conditioner?

1 Answers   TATA,

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what is reluctance?

11 Answers   TCS,

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What happens if we give ac supply to dc shunt and series motors individually

4 Answers   Essar,

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