For a 7.46 kW, 200 V dc shunt motor with full load efficiency of 85% has armature resistance of 0.25 ohms. Calculate the value of starting resistance in ohms for a current 1.5 times of the full load current.
(a) 2.788
(b) 3.038
(c) 2.688
(d) 2.588
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This key question is from DC Motor Starting topic in section DC Motors of Electrical Machines