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In: Electrical Engineering

Problem 1 ( answer all questions ) a. How does a dc-motor torque-speed characteristic behave when...

Problem 1 ( answer all questions )

a. How does a dc-motor torque-speed characteristic behave when a dc motor is applied
with a constant dc voltage under an open-loop mode of operation?
b. What additional capability can be achieved by flux weakening in wound-field dc
machines?
c. What are various types of field windings?

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