Q4) What is the effect in series motor if you assume V = Eb , with low resistance fielding winding ? а) b) The given information about series motor on full – load (with ( 220 V ) takes ( 78A) and runs at (850 r.p.m) , the series winding resistance is (0.04 2), with diverter in parallel with the field winding is a (0.18 2) and the armature resistance is (0.09 S2). that the flux is proportional to the field current) is a Neglected the iron, friction and windage losses. Determine the speed when developing full load torque ,the efficiency , maximum efficiency .

Q4) What is the effect in series motor if you assume V = Eb , with low resistance fielding winding ? а) b) The given information about series motor on full – load (with ( 220 V ) takes ( 78A) and runs at (850 r.p.m) , the series winding resistance is (0.04 2), with diverter in parallel with the field winding is a (0.18 2) and the armature resistance is (0.09 S2). that the flux is proportional to the field current) is a Neglected the iron, friction and windage losses. Determine the speed when developing full load torque ,the efficiency , maximum efficiency .

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter33: Single-phase Motors

Section: Chapter Questions

Problem 32RQ

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