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A ring forming a magnetic circuit is made from two materials;
one part is mild steel of mean length 25cm and cross-sectional area 4cm2, and the remainder is cast iron of mean length 20 cm and cross-sectional area 7.5 cm2 .
Use a tabular approach to verfiy the total mmf needed to cause a flux of 0.30mWb in the magnetic circuit.
find also the total reluctance of the circuit. Use the magnetization curves.
functions of the time base on the C.R.O
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The drawing shows the electrical potential as a function of distance along the x-axis. Determine the magnitude of the electrical field in the (a) A to B, (b) B to C and (c)C to D.
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