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The separately excited dc motor in the figure below has a rated armature current of 20 A and a rated armature voltage of 150 V. An ideal chopper switching at 5 kHz is used to control the armature voltage. If La = 0.1 mH, Ra= 1? , neglecting armature reaction, the duty ratio of the chopper to obtain 50% of the rated torque at the rated speed and the rated field current is

🗓 Dec 5, 2021

Answer is "0.7"

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Jennifer 🌐 India
Hello, please post an solution as well
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Kimberly 🌐 India
Thank you so much for the answer
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