A coil that con sists of 450 windings is wound around a bakelite rin g. The mean diameter of the ring is 100 mm and the diameter of the bakelite core is 20 mm. The currentthrou gh the coil is 3 A. Determine: 1.1 a) the field stren gth b) the flux den sity c) the total flux

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A coil that con sists of 450 windings is wound aroundabakelite ring. The mean
diameter of the ring is 100 mm and the diameter of the bakelite core is 20 mm.
The currentthrough the coil is 3 A. Determine:
1.1
a) the field stren gth
b) the flux den sity
c) the total flux
A ringhas two halves. The onehalf is made from Cast iron, while the other is
made from Cast steel. The two halves are held 1 mm apart with the aid of a
paper disc. The cross-section al area and mean circumference of the ringis 345
mm? and0.6 m respectively. Therelative permeability of cast iron is 2400, while
that of cast steel is 600. The ring has a coil with 200 win dings. The currentflow
through the coil causes a flux den sity of 0.48T.
1.2
Calculate the:
a) mmi
b) currentflow
Ignore the effects of fringing andleakage.
Transcribed Image Text:A coil that con sists of 450 windings is wound aroundabakelite ring. The mean diameter of the ring is 100 mm and the diameter of the bakelite core is 20 mm. The currentthrough the coil is 3 A. Determine: 1.1 a) the field stren gth b) the flux den sity c) the total flux A ringhas two halves. The onehalf is made from Cast iron, while the other is made from Cast steel. The two halves are held 1 mm apart with the aid of a paper disc. The cross-section al area and mean circumference of the ringis 345 mm? and0.6 m respectively. Therelative permeability of cast iron is 2400, while that of cast steel is 600. The ring has a coil with 200 win dings. The currentflow through the coil causes a flux den sity of 0.48T. 1.2 Calculate the: a) mmi b) currentflow Ignore the effects of fringing andleakage.
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