QI: The parameters of a 4 kW, 220V. 2-phase induction motor, in ohms per phase, are: r1=0.53, x1 =2.4, XM= 70, r2 = 0.96, x2 = 3.0. The motor is operated from unbalanced 2- phase source whose voltages are 230V and 210V, the smaller voltage is lagging the larger by 800. For a slip of 5% and rotational losses of 30 W, find the positive- and negative- sequence components of: (a) the applied voltages. (b) Find the values of phase currents (c) the input current. (d) Find the developed mechanical power. (e) Find the efficiency. Q1: The parameters of a 4 kW, 220V. 2-phase induction motor, in ohms per phase, are:r1 = 0.53, x1 = 2.4, XM= 70, r2 0.96, x2 = 3.0. The motor is operated from unbalanced 2-phase source whose voltages are 230V and 210V, the smaller voltage is lagging the largerby 800. For a slip of 5% and rotational losses of 30 W, find the positive- and negative-sequence components of:(a) the applied voltages.(b) Find the values of phase currents(c) the input current.(d) Find the developed mechanical power.(e) Find the efficiency.

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Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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QI: The parameters of a 4 kW, 220V. 2-phase induction motor, in ohms per phase, are: r1=0.53, x1 =2.4, XM= 70, r2 = 0.96, x2 = 3.0. The motor is operated from unbalanced 2- phase source whose voltages are 230V and 210V, the smaller voltage is lagging the larger by 800. For a slip of 5% and rotational losses of 30 W, find the positive- and negative- sequence components of: (a) the applied voltages. (b) Find the values of phase currents (c) the input current. (d) Find the developed mechanical power. (e) Find the efficiency.

Q1: The parameters of a 4 kW, 220V. 2-phase induction motor, in ohms per phase, are:
r1 = 0.53, x1 = 2.4, XM= 70, r2 0.96, x2 = 3.0. The motor is operated from unbalanced 2-
phase source whose voltages are 230V and 210V, the smaller voltage is lagging the larger
by 800. For a slip of 5% and rotational losses of 30 W, find the positive- and negative-
sequence components of:
(a) the applied voltages.
(b) Find the values of phase currents
(c) the input current.
(d) Find the developed mechanical power.
(e) Find the efficiency.

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