Armature resistance of a 230V shunt motor is 0.6 0 and no load current is 5A. When the rotor is loaded it is taking armature current of 60A. The speed is 1200rpm.Estimate the noload speed of a motor. O a. 1513.12 rpm O b. 1500 rpm OC 1400 rpm d. 1404.12 rpm

Armature resistance of a 230V shunt motor is 0.6 0 and no load current is 5A. When the rotor is loaded it is taking armature current of 60A. The speed is 1200rpm.Estimate the noload speed of a motor. O a. 1513.12 rpm O b. 1500 rpm OC 1400 rpm d. 1404.12 rpm

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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Concept explainers

Single Phase Induction Motor

The single-phase induction motor or engine consists of a single rotating phase in the stator and a rotating cage in the rotor. When phase one supply is connected to the stator winding, a magnetic field is generated. In the pulsating field, the rotor does not rotate due to inertia. So, a single-phase import motor does not start and requires some initial methods.

Question

Armature resistance of a 230V shunt motor is 0.6 0 and no load current is 5A. When the rotor is loaded it is taking
armature current of 60A. The speed is 1200rpm.Estimate the noload speed of a motor.
O a. 1513.12 rpm
O b. 1500 rpm
Oc 1400 rpm
O d. 1404.12 rpm

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Step 3: Calculation of speed at no load condition :

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