Answer Posted / sethar12

Transformer noise is mostly due to third harmonic.

What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

1982

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Why do we perform an open-circuit test and short-circuit test on the transformer?

1108

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Mr. mohh sahid m not satisfied for ur answer to the que weather the size of transformer increases or decreases withchange in fr for more detail go to the answer given by me

2120

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How can we calculate strength of copper hich is supplying electric power to heater and in it hold the heater also and what r all types of forces which is acting on it...

1974

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What is the working principle of CFL & T5 tube light & 40W tube light with electronic ballast?

3947

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How Can I calculate for the photometrics requirements for a street lighting? Data given are: 45 units of 6 meter light pole with 150 watts metal halide lamp, 220 volts and installed in a promenade area.

2083

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what is subtransient , transient and steady stateac components

2163

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What is the loss of power of transformer 220kv/33kv,63/80mva of % imp12.05 at 80%load

1836

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how to Select Lighting arrester? What r the parameters to be considered for the selection of Lighting arrester ?

1724

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What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

1735

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how to select rating of HT Panel

1448

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What are test values for an 63 KVA and 100 Kva Distribution Transformers for the following typical tests 1)Magnetic balance 2)Short circuit test 3)Open Circuit test 4)Vector group confirmation test .please give me the standard values for all the above tests.

2711

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How much minimum insulation required between 11kv/3.3kv transformer windings?

2428

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If I have Energy Meter Ratio as 100:5 & Also I have CT Ratio as 50:5 then what will be my multiplying Factor(M.F.)

1964

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How to synchronization will be done between two DGs ?

1766

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