MEO Class II – MET : 2011/AUG/10 – 2011/FEB/10 – 2022/SEP/10 – 2022/AUG/10 – 2011/MAR/10 – 2024/JAN/10 – 2025/JAN/10
Question
Q10. a) (i) What is direct-connected alternator? (3)
(ii) How is a direct-connected exciter arranged in an alternator? (3)
b) Find the synchronous impedance and reactance of an alternator in which a given field current produces an armature current of 200 A on short circuit and a generated e.m.f. of 50V on open- circuit. The armature resistance is 0.1 ohm. To what induced voltage must the alternator be excited if it is to deliver a load of 100A at a p.f of 0.8 lagging, with a terminal voltage of 200V. (10)
Asked in Year/Month/Ques No.
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