Answer Posted / sak

it is not necessary to charge the battery always, instead it
should be charged fully once and after discharging you can
charge it again, as nobody knew till what level it is
discharged. so its better to keep the UPS on charge
continously. Anyhow battery last for maximum a year only.

11kv/433v delta/star distribution transformer primary side full load Ht current is 83.33A in , but input side VCB rating 800A.why?

1730

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if negative of DC supply used and positive is grounded through EGB, and if ELCB used in the system then is it sense the positive volatge and get tripped is it possible?

1951

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Explain what is clipper and clamper circuits?

1235

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How is the gain affected by the introduction of feedback in a control system.

1203

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how oti and wti connections are different from each other?

2123

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how can i change the rotation of the AC single phase induction motor and show me by diagram

1853

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how can calculate resistance box for 15 kw, 6 pole, RV-230, RA-42 motor

3390

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Define de-sensitivity?

1190

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How to Calculate The Neutral Earth flat design calculation for the Synchronised generator (Gen 1-650Kva, Gen 2-725Kva

1724

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Can we use Ccapacitive voltage transformer directly for metering purpose?

1925

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Y phase plates are used in transmission line??? what is there need???

2972

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what is mean by NPS (Negative phase sequence)fault? what is the difference between EFR & OCR faults?

2420

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could an induction motor be used for regenerative braking in electric-train control? in this type of application would some scheme have to be devised to obtain low synchronous speeds while braking? would induction-motor drive, therefore, be suitable for passenger service?

2081

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In Electrical 'Single Line Diagram' cable nomenclature shows "2 X 1C X 630sq.mm to be provided for one incomer. The question is how many cable to be proved for one Incomer.

1817

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Define corner frequency?

1262

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