bläi 5 The input power to a 220 V lap wound shunt D.C motor runs is 11 kW , the speed is 1150 rpm takes 5 A at no load „shunt field resistance is 110 Q and armature resistance is 0.5 O Find a- The speed of motor at this load b-The speed if connected resistance (25 Q) in series with field resistance when the armature torque is constant and the flux is proportional to field current .assume the information in branch a is normal condition.c-Maximum efficiency before and after adding (R .add)

bläi 5 The input power to a 220 V lap wound shunt D.C motor runs is 11 kW , the speed is 1150 rpm takes 5 A at no load „shunt field resistance is 110 Q and armature resistance is 0.5 O Find a- The speed of motor at this load b-The speed if connected resistance (25 Q) in series with field resistance when the armature torque is constant and the flux is proportional to field current .assume the information in branch a is normal condition.c-Maximum efficiency before and after adding (R .add)

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 6RQ: Name three factors that determine the torque produced by an induction motor.

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Q: d.c. shunt motor

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

bläs 5 The input power to a 220 V lap wound
shunt D.C motor runs is 11 kW , the
speed is 1150 rpm takes 5 A at no load
„shunt field resistance is 110 Q and
armature resistance is 0.5Q Find a-
The speed of motor at this load b-The
speed if connected resistance (25 Q)
in series with field resistance when the
armature torque is constant and the
flux is proportional to field current
.assume the information in branch a is
normal condition.c-Maximum
efficiency before and after adding (R
.add)

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Winding and Construction of the Rotor and Stator

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