Consider the magnetic circuit shown. Assume that the reluctance of the iron is small enough to be ignored. For an air gap of 0.1 cm, and an effective area of each gap of 10 cm2, determine the TOTAL number of turns needed to produce a flux density of 0.5 T in the gaps.
•Consider the coil shown on slide 7. Make up reasonable numbers and determine the magnetic field in the gap and on the pole face. Consider the force on a current carrying wire placed in the gap.
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•Calculate the energy needed to produce a field of 1 T over a volume big enough to put a person in (like you would find in an MRI).
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•What is the typical magnetic field saturation in silicon steel?
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•Look up the current carrying capacity of a 12 gauge wire (<40 oC rise). And convert this to A/m2.
•Consider the coil shown on slide 7. Make up reasonable numbers and determine the magnetic field in the gap and on the pole face. Consider the force on a current carrying wire placed in the gap.
•
•Calculate the energy needed to produce a field of 1 T over a volume big enough to put a person in (like you would find in an MRI).
•
•What is the typical magnetic field saturation in silicon steel?
•
•Look up the current carrying capacity of a 12 gauge wire (<40 oC rise). And convert this to A/m2.
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