A dc motor generates a back emf of 200 V. It is controlled by a pair of thyristors in a single-phase full-wave center-tapped circuit. The voltage between the center tap and each anode is 175 V ac, for firing angle 60° and Ra = 0.8 Ω, the armature current will be

A dc motor generates a back emf of 200 V. It is controlled by a pair o

1.	A dc motor generates a back emf of 200 V. It is controlled by a pair of thyristors in a single-phase full-wave center-tapped circuit. The voltage between the center tap and each anode is 175 V ac, for firing angle 60° and Ra = 0.8 Ω, the armature current will be
A.	7.88 A
B.	12.52 A
C.	14.14 A
D.	15.45 A
Answer» E.