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A 200 MVA alternator operates at no load at frequency of 50 Hz, it has an inertia constant of 5 MW-sec/MVA and the governing system has a time delay of 0.6 sec. If the load of 50 MW is suddenly applied then find the frequency deviation during this time?
0.76 Hz
-0.76 Hz
0.85 Hz
-0.85 Hz