4. When two transformers are operating in parallel, they will share the lead as under (1 Point) proportional to the impe
Posted: Sun May 15, 2022 5:34 pm
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15. a 240 V dc shunt motor has an armature resistance of 0.4 ohm and is running at the full load speed of 600 rpm with a full load current of 25 A. The field current is constant. also a resistance of 1 ohm is added in series with the armature, find the speed at twice the full load (1 Point) 535 rpm 717 rpm 443 rpm 258 222
1. In a transformer the voltage regulation will be zero when it operates at (1 Point) unity p.f. leading lagging p.f. leading p.f. zero p.f. leading zero p.f. lagging unity pf. lagging