A large motor has an armature whose inductance us 0. 12 H. The motor has no capacitance. The series resistance R of the armature's wire is 25Ω. (a) Calculate the power used by the motor when connected to a 120 V, 60Hz power source. (b) Calculate the capacitance of a series capacitor that maximizes the power used by the motor. (c) Calculate the power used when this capacitance is added. [Warning: Note that both I and tetha change when the capacitor us added to the circuit. Use the formula: P= IVcos

A large motor has an armature whose inductance us 0. 12 H. The motor has no capacitance. The series resistance R of the armature's wire is 25Ω. (a) Calculate the power used by the motor when connected to a 120 V, 60Hz power source. (b) Calculate the capacitance of a series capacitor that maximizes the power used by the motor. (c) Calculate the power used when this capacitance is added. [Warning: Note that both I and tetha change when the capacitor us added to the circuit. Use the formula: P= IVcos

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter21: Resistive-capacitive Series Circuits

Section: Chapter Questions

Problem 6RQ: A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating...

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