A 10kW, 400 V, 3-phase, 6-pole, 50 Hz slip ring induction motor has a maximum torque equal totwice the full load torqueresistance and rotational losses, (a) determine the slip at full load, starting torque and torquedeveloped at a slip of 0.25. (b) If the rotor circuit resistance is increased to four times byconnecting resistance in series with each rotor slip ring, determine,(i) the slip at maximum torque,(ii) the slip at which the motor will develop the same full load torque (c) the starting torque.a slip of 20%, with slip rings short circuited. Neglecting stator

According to the question we have to find the value of slip at maximum torque, the slip at which the…

A 10KW, 400 V, 3-phase, 6-pole, 50 Hz slip ring induction motor has a maximum torque equal to twice the full load torque at a slip of 20%, with slip rings short circuited. Neglecting stator resistance and rotational losses, (a) determine the slip at full load, starting torque and torque developed at a slip of 0.25. connecting resistance in series with each rotor slip ring, determine, (i) the slip at maximum torque, (ii) the slip at which the motor will develop the same full load torque (c) the starting torque. (b) If the rotor circuit resistance is increased to four times by

A 10KW, 400 V, 3-phase, 6-pole, 50 Hz slip ring induction motor has a maximum torque equal to twice the full load torque at a slip of 20%, with slip rings short circuited. Neglecting stator resistance and rotational losses, (a) determine the slip at full load, starting torque and torque developed at a slip of 0.25. connecting resistance in series with each rotor slip ring, determine, (i) the slip at maximum torque, (ii) the slip at which the motor will develop the same full load torque (c) the starting torque. (b) If the rotor circuit resistance is increased to four times by

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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A 3-phase, 220-V, 50-Hz, 6-pole, Y-connected induction motor is operating with a per-unit slip of 0.07, 95 A line current, PF=0.8 lagging, and 2200 W stator copper losses. The total friction, windage, and core losses are lumped and assumed to be constant at 3.5 KW. Find the rotor copper losses and the output power of this motor? Select one: O a. None O b. PRCI = 1.08 KW and Pout = 18.8 KW O c. PRCL = 1.87 KW and Pout = 21.4 KW O d. PRCL = 10.5 KW and Pout = 29.14 KW