A 220 V shunt motor has armature and field resistances of 0.5 Q and 220 Q respectively. Initially, the motor is running at 1000 rpm by drawing 10 A current from the supply for fan type of load. Calculat the new armature current if an external armature resistance of value 5 0 is inserted in the armature circuit. O 12 A O 5 A O 7A O 10 A

A 220 V shunt motor has armature and field resistances of 0.5 Q and 220 Q respectively. Initially, the motor is running at 1000 rpm by drawing 10 A current from the supply for fan type of load. Calculat the new armature current if an external armature resistance of value 5 0 is inserted in the armature circuit. O 12 A O 5 A O 7A O 10 A

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter3: Magnetic Starters

Section: Chapter Questions

Problem 18SQ

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