What are the maximum and minimum no-load speeds

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Reference no: EM13967624

1. Assume that the motor is operating at full load and that the variable resistor Radj is again 175 Ω. If the armature reaction is 1200 A×turns at full load, what is the speed of the motor?

2. If Radj can be adjusted from 100 to 400 Ω, what are the maximum and minimum no-load speeds possible with this motor?

3. What is the starting current of this machine if it is started by connecting it directly to the power supply VT ? How does this starting current compare to the full-load current of the motor?

4. Plot the torque-speed characteristic of this motor assuming no armature reaction, and again assuming a full-load armature reaction of 1200 A×turns.

Reference no: EM13967624

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