Find valve of starting resistor limiting armature current

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Reference no: EM13250274

A 500V shunt dc motor has a nominal armature current of 40A, and operates at 1200 rpm. if the armature resistance is 0.25 (ohm), calculate:

1. The counter emf

2. The power loss

3. The developed torque.

4. The starting current, if the motor is directly connected to the 500V supply

5. The valve of a starting resistor limiting the initial armature current to 60A

Reference no: EM13250274

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