Answer / imran abbas

THE CURRENT THAT PRODUCE IN THE CORE DUE TO CUTTING OF
MAGNETIC LINES OF FORCES,FOR REDUCING OR DECREASING THIS
EDDY CURRENT A LAMINATED CORE IS USED,AS WE SEE IN
TRANSFOMER THE WINDIND ARM ARE NOT IN SOLID BODY,IT IS MADE
WITH LAMINATED IRON PIECES AND ALL THESE PIECES ARE
INSULATED EACH OTHER

Answer / d c

Eddy currents are nothing but a type of circulating current that is generated basically due to the presence of the leakage flux (the flux that does not linked with the main core) supplied by the source current.

the inertia constants of two machines are respectively 30and 42 MJ per MVA.when the change in frequency due to change in load in first machine is 12 Hz,the change in second machine frequency will be?

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Explain the working principle of Synchronous Generator and Assynchronous generator?

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