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For the electromagnet of Example 139 a Calculate the current required to keep the bar in place Hint The air gap becomes zero and the iron reluctance cannot be neglected Assume μr

For the electromagnet of Example 13.9:

a.    Calculate the current required to keep the bar in place. (Hint: The air gap becomes zero, and the iron reluctance cannot be neglected.) Assume μ= 1,000, = 1 m.

b.    If the bar is initially 0.1 m away from the electromagnet, what initial current would be required to lift the magnet?

Jun 18 2020 View more View Less

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