Three phase, Y-connected, 220 V, 50Hz, 6-pole, induction motor, The following parameters referred to stator in Q/ph: 0.294, R2 =0.144, X1=0.503, X2=0.209, and Xm = 13.15. otal friction and windage losses are 200 watts. per phase equivalent circuit and calculate the following at a slip of 2% Stator current? Power factor? Output power? Output torque ? Efficency? Yonous speed,slip speed, and rotor speed of three phase induction mc why this motor cannot run at synchronous speed? C- Explain breifly with drawing the starting of three phase induction motor by using auto transformer?

Three phase, Y-connected, 220 V, 50Hz, 6-pole, induction motor, The following parameters referred to stator in Q/ph: 0.294, R2 =0.144, X1=0.503, X2=0.209, and Xm = 13.15. otal friction and windage losses are 200 watts. per phase equivalent circuit and calculate the following at a slip of 2% Stator current? Power factor? Output power? Output torque ? Efficency? Yonous speed,slip speed, and rotor speed of three phase induction mc why this motor cannot run at synchronous speed? C- Explain breifly with drawing the starting of three phase induction motor by using auto transformer?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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The starting winding circuit of a capacitor start, induction run motor consists of a 15 Q resistance and a 20 Q2 inductive reactance. These components are in series with a 50 uF capacitor. The circuit is connected to a 120 V, 60 Hz source. Determine: a. the impedance of the series circuit. b. the current. c. the true power. d. the power factor.
The resistance and reactance per phase of the rotor of a 3-phase induction motor are 0.6 ohm and 5 ohms respectively. The induction motor has a star-connected rotor and when the stator is connected to a supply of normal voltage, the induced e.m.f. between the slip rings at standstill is 80 V. Calculate the current in each phase and the power factor at starting when (i) the slip-rings are shorted, (ii) slip-rings are connected to a star-connected resistance of 4 ohm per phase.
Three Phase Induction Mot... The relative speed of stator magnetic field with respect to rotor of a 30 induction motor with 4 pole, 50 Hz frequency. If the slip is 0.05.
1a
A 40-kVA, 240-V, 50-Hz, 4-pole, three-phase, Y-connected alternator has a synchronous reactance of 0.08 n/phase. The armature winding resistance is negligibly small, and the revolving field is established by permanent magnets. The rotational loss is 5% of the power developed. When the gen- erator delivers the rated load at a leading power factor of 0.866, determine (a) the power angle, (b) the efficiency, (c) the voltage regulation, and (d) the torque supplied by the prime mover.
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