1.

The armature of dc motor has \[20\,\Omega \] resistance. It draws current of 1.5 ampere when run by 220 volts dc supply. The value of back e.m.f. induced in it will be [MP PMT 1999]

A.            150 V      
B.            170 V
C.            180 V      
D.            190 V
Answer» E.


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