Q. 42 To conduct load test on a dc shunt motor, it is coupled to a generator which
is identical to the motor. The field of the generator is also connected to the
same supply source as the motor. The armature of generator is connected
to a load resistance. The armature resistance is 0.02 p.u. Armature reaction
and mechanical losses can be neglected. With rated voltage across the motor,
the load resistance across the generator is adjusted to obtain rated armature
current in both motor and generator. The p.u value of this load resistance is
(A) 1.0
(B) 0.98
(C) 0.96
(D) 0.94
Answer: (C)
Explanation:
