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MEO Class IV – MET : 2026/JUN/15
Question

Q6. (a) Explain the principle of conservation of charge and its relationship to Kirchoff's current law. (6)

(b) A 5kVA, 200/400 V transformer has iron losses of 40 W and full-load copper losses of 100 W. Find (a) efficiency at full load, unity pf. (b) efficiency at half load, 0.8 pf. (c) the load at which maximum efficiency occurs. (10)

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