Q1/A 3-phase, 50hp, 480V, 4-poles, 60Hz, I.M, its full load current is 60.5L- 25.2°A at slip of 2.5% if the Pfw-900W. Find the motor efficiency and useful shaft torque. (Assume that I2e= 53.8L-8.2°A, R2e-0.12502, R₁=0.12). Q2/ A 6-poles generator having a 3-phase, star connected winding. To induce a line voltage of 3300V at no-load if required flux of 33.15mwb/pole at 50 Hz frequency. Find total number of slots and the number of conductors per slot if the slot pitch is 20° and coils of full span. Q3/ Drive the distribution and pitch factors Q4/ A 3-phase, 4-pole, 400V, 50Hz, 20Kw, IM its full load speed is 1470rpm. At critical slip the rotor copper losses increased 8-time compared with full load value. Find Tm/Tr, Ts/Tr. Neglect Z₁ and Pfw. Q5/ An 8-poles, 50Hz, delta connection, induction motor having 96 slots with 60 conductors in each, and coil chorded by 3 slots find the required sinusoidally distributed flux when the motor operate from 440V supply.

Q1/A 3-phase, 50hp, 480V, 4-poles, 60Hz, I.M, its full load current is 60.5L- 25.2°A at slip of 2.5% if the Pfw-900W. Find the motor efficiency and useful shaft torque. (Assume that I2e= 53.8L-8.2°A, R2e-0.12502, R₁=0.12). Q2/ A 6-poles generator having a 3-phase, star connected winding. To induce a line voltage of 3300V at no-load if required flux of 33.15mwb/pole at 50 Hz frequency. Find total number of slots and the number of conductors per slot if the slot pitch is 20° and coils of full span. Q3/ Drive the distribution and pitch factors Q4/ A 3-phase, 4-pole, 400V, 50Hz, 20Kw, IM its full load speed is 1470rpm. At critical slip the rotor copper losses increased 8-time compared with full load value. Find Tm/Tr, Ts/Tr. Neglect Z₁ and Pfw. Q5/ An 8-poles, 50Hz, delta connection, induction motor having 96 slots with 60 conductors in each, and coil chorded by 3 slots find the required sinusoidally distributed flux when the motor operate from 440V supply.

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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