A entropy b 2375 c 2667 d 3000 e 3333 page 15 of 25

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Unformatted text preview: two problems, we would like to build an “EM gripper” as shown in the figure, which can be used to clamp onto an object placed within its jaws. The desired directions of the forces, , are shown in the figure. A permanent, static magnetic field is still necessary for the EM gripper to function. Assume that the two forces are acting only on the conductive jaws. 26.In which direction should the applied magnetic field flux density point for maximum force? a. Always in the direction of the current, . b. To the left of the page. c. To the right of the page. d. Out of the page. e. Into the page. 27.Suppose we desire the magnitude of the force to be | | . What magnitude will we need for a properly-oriented magnetic flux density, ? a. b. c. d. e. Page 16 of 25 0 ( 1 ) 2 ( 3 4 ) 28.Which timing diagram represents ? a. 0 1 2 3 d. 4 0 1 2 3 4 0 1 2 3 4 0 1 2 3 4 0 1 2 3 4 b. 0 1 2 3 e. 4 c. 0 1 2 3 4 29.Which timing diagram represents ? a. 0 1 2 3 4 d. b. 0 1 2 3 4 e. c. 0 1 2 3 4 Page 17 of 25 0...
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This test prep was uploaded on 03/22/2014 for the course ECE 110 taught by Professor Staff during the Fall '08 term at University of Illinois, Urbana Champaign.

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