1. An iron ring has circular cross-section 4 cm in radius and the average circumference of 100 cm. The ring is uniformly wounded with a coil of 700 turns. Calculate, i. Current required to produce a flux of 2 mWb in the ring, if relative permeability of the iron is 900. ii. If a saw cut of Imm wide is made in the ring, calculate the current which will give same flux as in part (i).

1. An iron ring has circular cross-section 4 cm in radius and the average circumference of 100 cm. The ring is uniformly wounded with a coil of 700 turns. Calculate, i. Current required to produce a flux of 2 mWb in the ring, if relative permeability of the iron is 900. ii. If a saw cut of Imm wide is made in the ring, calculate the current which will give same flux as in part (i).

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.1MCQ: The Ohms law for the magnetic circuit states that the net magnetomotive force (mmf) equals the...

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