1.

An electric motor operating on a 60 V dc supply draws a current of 10 A. If the efficiency of the motor is 50%, the resistance of its winding is      [AMU (Engg.) 2001]

A.            \[3\Omega \] 
B.            \[6\Omega \]
C.            \[15\Omega \]         
D.            \[30\Omega \]
Answer» B.            \[6\Omega \]


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