A single-phase half-controlled rectifier is driving a separately excited dc motor. The dc motor has a back emf constant of 0.5 V/rpm. The armature current is 5 A without any ripple. The armature resistance is 2 Ohm. The converter is working from a 230 V, single-phase ac source with a firing angle of 30o . Under this operating condition, the speed of the motor will be 

(A) 339 rpm (B) 359 rpm (C) 366 rpm (D) 386 rpm

asked May 18, 2018 in Bipolar Junction Transistor by
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answered Apr 14 by