de shunt motor at 1000 r.p.m A 125V while taking a current of 15A calculate the speed when the load current is 30A if armature reaction weakens the fild dy 5% Determine torques in both cases. Ra=0.2 ohm, Rf=125 ohm, voltage drop per brush is 1 V

de shunt motor at 1000 r.p.m A 125V while taking a current of 15A calculate the speed when the load current is 30A if armature reaction weakens the fild dy 5% Determine torques in both cases. Ra=0.2 ohm, Rf=125 ohm, voltage drop per brush is 1 V

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 13RQ: A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is...

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Concept explainers

Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.

Question

de shunt motor at 1000 r.p.m A 125V while taking a current of 15A calculate
the speed when the load current is 30A if armature reaction weakens the fild dy
5% Determine torques in both cases. Ra=0.2 ohm, Rf=125 ohm, voltage drop
per brush is 1 V

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