4. A dc shunt motor runs at 900rpm from a 400 V supply when taking an armature current of 25A.Calculate the speed at which it will run from a 230 V supply when taking an armature current of 15 A. The...

Help me solve this one4. A dc shunt motor runs at 900rpm<br>from a 400 V supply when taking an<br>armature current of 25A.Calculate the<br>speed at which it will run from a 230 V<br>supply when taking an armature<br>current of 15 A. The resistance of the<br>armature circuit is 0.8 ohm. Assume<br>the flux per pole at 230 V to have<br>decreased to 75% of its value at 400V.<br>

Extracted text: 4. A dc shunt motor runs at 900rpm from a 400 V supply when taking an armature current of 25A.Calculate the speed at which it will run from a 230 V supply when taking an armature current of 15 A. The resistance of the armature circuit is 0.8 ohm. Assume the flux per pole at 230 V to have decreased to 75% of its value at 400V.

Jun 10, 2022
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