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The flux density in the 0.2in. air gap of an electric motor is 42,000 maxwells per sq in. if the mmf required to produce this flux density is 82 percent of the total mmf developed by the exciting coil (18 percent is needed for the iron portions of the magnetic circuit), calculate the number of turns in the windings, assuming a current of 2.2 amp. Ans. 1,460 turns

The flux density in the 0.2in. air gap of an electric motor is 42,000 maxwells per sq in. if the mmf required to produce this flux density is 82 percent of the total mmf developed by the exciting coil (18 percent is needed for the iron portions of the magnetic circuit), calculate the number of turns in the windings, assuming a current of 2.2 amp. Ans. 1,460 turns

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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The flux density in the 0.2in. air gap of an electric motor is 42,000 maxwells per sq in. if the mmf required to produce this flux density is 82 percent of the total mmf developed by the exciting coil (18 percent is needed for the iron portions of the magnetic circuit), calculate the number of turns in the windings, assuming a current of 2.2 amp. Ans. 1,460 turns
Transcribed Image Text:The flux density in the 0.2in. air gap of an electric motor is 42,000 maxwells per sq in. if the mmf required to produce this flux density is 82 percent of the total mmf developed by the exciting coil (18 percent is needed for the iron portions of the magnetic circuit), calculate the number of turns in the windings, assuming a current of 2.2 amp. Ans. 1,460 turns
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