Question: 2 . A 5 - hp , separately excited, 1 6 0 - V dc motor has 0 . 2 5 - armature resistance and

2. A 5-hp, separately excited, 160-V dc motor has 0.25- armature resistance and 90-W rotational loss at the nameplate
speed of 600 rpm. The field is also connected to 160 V and its current is 0.5 A.
a) What is the developed torque at the nameplate output power of 5 hp?
b) What is the efficiency at 5 hp out, including field losses?

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