Answer Posted / abid ali khattak

due to the eddy current losses. Because whenever we provide
the power supply to the transformer emmidiatly flux run in
the core.hence due to the silicone immitted core the
insulation between one layer to another layer is becomes
lettle and the fulx will go high which is becomes vibration
and giving the noise. Which we can observed nearby the
transformer.

what is the difference between megger and earth resister ??

1867

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Assuming that a dedicated neutral earthing transformer is provided for each GT generator, when the two generators are running in parallel, has consideration been given that the earth fault current from one generator stator winding be split between the two neutral earthing transformers? If so, what adverse impact will this have on the operation of the 59N and 27TN devices?

1714

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What is the source of dependent source ?

1944

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If we want to change a contactor of faulty one what are the conditions want to fullfil

2045

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

2084

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sugest any typical project ?

1871

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how to select battery for 15 KVA UPS with formula

2596

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what is accuracy ? in any meters , coils accuracy . how can u defined that ?

2493

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what are the protecyion of transformer & generators

2030

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Whats the difference btwn a latch, port,data bus buffer? Do they all not hold data in d flip flops??

2461

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No load tap changing transformer working

1715

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Greeting to all members, How to calculate spill current when we have different ratio CT and Class for REF(Low Imp) I have 500/1A 5P20 @line side n 400/1A CL.X @ Neutral.

3056

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What is dynamo function in DG sets and draw block diagram?

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What is meant by Low Resistance Cable and High Resistance Cable.

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