A 230V dc shunt wound motor has an armature resistance of 0,15Ω.W

A 230V dc shunt wound motor has an armature resistance
of 0,15Ω.When operating on no load at 650 rev/min the
armature current is 6A . The motor takes a full load
current of 85A. Calculate the full load speed if the
field flux is (i) maintained constant (ii)reduced by 0,03

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