A shunt-wound DC motor with the field coils and rotor connected in parallel (Figure 1) operates from a 130 V DC power line. The resistance of the field windings, Rt, is 250 N. The resistance of the rotor, R;, is 4.40 N. When the motor is running, the rotor develops an emf E. The motor draws a current of 4.50 A from the line. Compute the emf E . • View Available Hint(s) Friction losses amount to 50.0 W. νΟ ΑΣφ ? E = V Figure 1 of 1 Submit Part D + Compute the rate of development of thermal energy in the field windings. V. FR Express your answer in watts.

A shunt-wound DC motor with the field coils and rotor connected in parallel (Figure 1) operates from a 130 V DC power line. The resistance of the field windings, Rt, is 250 N. The resistance of the rotor, R;, is 4.40 N. When the motor is running, the rotor develops an emf E. The motor draws a current of 4.50 A from the line. Compute the emf E . • View Available Hint(s) Friction losses amount to 50.0 W. νΟ ΑΣφ ? E = V Figure 1 of 1 Submit Part D + Compute the rate of development of thermal energy in the field windings. V. FR Express your answer in watts.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter23: Electromagnetic Induction, Ac Circuits, And Electrical Technologies

Section: Chapter Questions

Problem 53PE: Construct Your Own Problem Consider a double transformer to be used to create very large voltages....

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