Answer Posted / arun

Do all the tests in the transformer windings then you will
get the fault.

Differential protection is given mainly to isolate the
circuit when there is fault inside the transformer.

Operation carried out in thermal power stations?

1129

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what is is the potential diffrence between two phase ?

6391

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A 1F capacitor is charged to 100V initially. A 1H inductor is connected accros the capacitor througha a switch. The current in the circiut when the switch is closed is____

2319

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What is the difference between electronic regulator and ordinary rheostat regulator for fans?

1018

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if we have 320KVA Genset kindly advice how much load we can put it.

1517

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What is resonant frequency?

1266

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It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.

3861

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how do i commission a distribution transformer knowing all its ratings and transformation ratios?d

4568

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In case of generator when we consume more power produces by it why load on generator increase and starts sound more. and how it is adjusted..

1934

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can i use ups power as a raw power for another ups

1973

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What are IR values and what it should be for coil and for insulator

2984

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what the function breaker failure scheme, how is it operated

1903

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Explain the different regions in frequency response?

1076

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I am B.E.electrical engineer having 7 years of experience in Transformer testing upto 315 MVA.I want to khow how I can get the 'Electrical Valuer' License.

2099

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what is the difference between active power and reactive power and apparant power in practical as well as theoritical

1921

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