A 500 V dc shunt motor runs at its normal speed of 250 rpm when the armature currents are 200 A. The armature resistance is 0.12 ohm. Calculate the speed and the regulation when resistance is inserted in the field circuit, reducing the shunt field current to 80% of the normal value and the armature current is 100 A. Ans.: 320.378 rpm, 28.151% show diagram and step by step process plz make sure your writing is clear.

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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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A 500 V dc shunt motor runs at its normal speed of 250 rpm when the
armature currents are 200 A. The armature resistance is 0.12 ohm.
Calculate the speed and the regulation when resistance is inserted in the
field circuit, reducing the shunt field current to 80% of the normal value and
the armature current is 100 A. Ans.: 320.378 rpm, 28.151%

show diagram and step by step process plz make sure your writing is clear. 

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