induction motor is given Figure next to. The rotational, core, friction and windage losses except the load losses (stator and rotor) are neglected. The motor runs at full load speed of 1700 r.p.m. The inserted resistance R_ins in the rotor circuit to start from B on curve 2 equal tog Speed-torque characteristic 1800 1600 1400 1200 1000 800

induction motor is given Figure next to. The rotational, core, friction and windage losses except the load losses (stator and rotor) are neglected. The motor runs at full load speed of 1700 r.p.m. The inserted resistance R_ins in the rotor circuit to start from B on curve 2 equal tog Speed-torque characteristic 1800 1600 1400 1200 1000 800

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...

See similar textbooks

Similar questions

List the different types of stray load losses in an induction motor.
A 3-phase, 60 Hz induction motor has 2 poles. If the slip is 2% at a certain load, determine the synchronous speed and the speed of the rotor and the frequency of the induced e.m.f.’s in the rotor
A three-phase induction motor used for a commercial application in Oman runs at 580 rpm at no load and at 552 rpm at full load. a) How many poles do this motor have? b) What is the percentage slip at full load? c) The frequency of the rotor currents when slip is 5 % d) The frequency of the rotor currents at standstill. a) b) c) d)
a) The rotor power output of a 3-phase induction motor is 15 kW and the corresponding slip is 4%. The rotor copper loss will be..
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.
The rotor of a 3-phase, 60-Hz, 4-pole induction motor gets a total of 120kW through the air gap with a rotor frequency of 3Hz. a. What is the rotor speed (RPM)? b. What is the rotor copper loss (W)?
Q2 Complete the answer : The rotor reactance of the three phase induction motor is varies with ................... of the rotor current.
A 3-phase, 60 Hz induction motor has two poles. If the slip is 2% at a certain load, determine the synchronous speed, the speed of the rotor and the frequency of the induced e.m.f.'s in the rotor.
Three phase slip ring induction motor gives a reading of 65 V across slip rings when at rest with normal stator voltage applied. The rotor is star connected and has an impedance of (0.8 + j6) ohm per phase. Find the rotor current when the machine is (i) at standstill with the slip rings joined to a star-connected starter with a phase impedance of (4+j3) ohms and (ii) running normally with a 5% slip.
The rotor resistance and standstill reactance of a 3-phase induction motor are 0.015 Q and reactance 0.09 0 per phase. (i) What is the p.f. of the motor at start? (ii) What is the p.f. at a slip of 4 per cent? (iii) If the number of poles is 4, the supply frequency is 50-Hz and the standstill e.m.f. per rotor phase is 110 V, find out the full-load torque. Take the full-load slip as 4 per cent.