A 50 Hz, 400 V, 4 pole wound rotor Induction Motor has star connectedstator and delta connected rotor. The effective turn ratio (stator/rotor)per phase is (1.414/1). The rotor leakage impedance equal 0.1 + j0.5ohm per phase. The Torque / Slip curve is given by following points:Torque 137Slip1651801841671077658470.050.10.120.150.20.40.60.81The load torque represented by straight line starting from (70 N.m) andincreases to (90 N.m) at speed (650) r.p.m. Determine:(1): Stator leakage impedance.(2): The full load Torque and speed when:(a) The supply voltage reduced by (20%) and (10%)(b) Both the voltage and frequency reduced by (15%)(3): Additional rotor resistance that must be added to get maximumtorque at starting and at speed (850) m.(4): The percentage voltage reduction allowed without stalling.(5):The speed and torque when an additional resistance equal to halfrotor resistance added in series with rotor winding.

Given data: ZR=0.1+j0.5 Ωn1=650 rpmf=50 HzP=4 Note: As per our policy, I have attempted the first…

A 50 Hz, 400 V, 4 pole wound rotor Induction Motor has star connected stator and delta connected rotor. The effective turn ratio (stator/rotor) per phase is (1.414/1). The rotor leakage impedance equal 0.1 + j0.5 ohm per phase. The Torque / Slip curve is given by following points: Torque 137 165 | 180 184 167 107 76 58 47 Slip |0.05 0.1 0.12 0.15 0.2 0.4 0.6 0.8 The load torque represented by straight line starting from (70 N.m) and increases to (90 N.m) at speed (650) rR.m. Determine: (1): Stator leakage impedance. (2): The full load Torque and speed when: (a) The supply voltage reduced by (20%) and (10%) (b) Both the voltage and frequency reduced by (15%) (3): Additional rotor resistance that must be added to get maximum torque at starting and at speed (850) m. (4): The percentage voltage reduction allowed without stalling.

A 50 Hz, 400 V, 4 pole wound rotor Induction Motor has star connected stator and delta connected rotor. The effective turn ratio (stator/rotor) per phase is (1.414/1). The rotor leakage impedance equal 0.1 + j0.5 ohm per phase. The Torque / Slip curve is given by following points: Torque 137 165 | 180 184 167 107 76 58 47 Slip |0.05 0.1 0.12 0.15 0.2 0.4 0.6 0.8 The load torque represented by straight line starting from (70 N.m) and increases to (90 N.m) at speed (650) rR.m. Determine: (1): Stator leakage impedance. (2): The full load Torque and speed when: (a) The supply voltage reduced by (20%) and (10%) (b) Both the voltage and frequency reduced by (15%) (3): Additional rotor resistance that must be added to get maximum torque at starting and at speed (850) m. (4): The percentage voltage reduction allowed without stalling.

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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