1. A dc separately excited motor has a constant field current. The armature is fed from a single phase supply through a semi-converter. When a = 0, speed is 600 rpm. If a = 90°, the speed is likely to be





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  • By: guest on 02 Jun 2017 01.11 am
    Average output voltage is reduced to 50% if a = 90°. Hence speed is also reduced to 50%.
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