Prob: A 5000KVA, 6.6KV, 3-Ph star connected altemator has a resistance of 0.752/ph. Estimate by ZPF method the voltage regulation for a load current of 500A at power factor (1) Unity, (ii) 0.707 lagging and leading, from the following test data: Field current (A): 32 O.C voltage (V): 3100 ZPF voltage (V) : 0 50 75 100 140 4900 6600 7500 8300 1850 4250 5800 7000

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Q: Subject : Power electronics Please write handwritten Answer

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Differential amplifier

There are two amplifying stages with common degeneration in a differential amplifier.