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Q. Consider themagnetic circuit of Figure. Let the cross-sectional area AC of the core, be
16 cm2 , the average length of the magnetic path in the core lC be 40 cm, the number of turns N of the excitation coil be 100 turns, and the relative permeability µr of the core be 50,000.
For a magnetic flux density of 1.5 T in the core, determine:
(a) The flux φ
(b) Total flux linkage λ(= Nφ).
(c) The current required through the coil.
Q. The external - characteristics data of two shunt generators in parallel are given as follows: Load Current, A: 0 5 10 15 20 25 30 Terminal voltage I, V: 270 263 254 240 22
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