# PSD Highlights Final

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9. HIGHLIGHTS (UNIT-WISE) &% Basic Performance Equations of D.C. Motors Separately excited D.C. Motor E a = K m W m = V t - I a R a W m = (V t - I a R a ) / K a Ø D.C. Series Motor T e = k a I a 2 W m = (V t / (K I a )) - ( r a + r s ) / k Single phase half wave converter drives V o = (V m / 2x ) (1 + cos 1 ¬ ) V f = (V m /x ) (1 + cos 2 ¬ ) Single phase semi converter drives V o = (V m /x ) (1 + cos 1 ¬ ) V f = (V m
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