2007-02-13 06:16:38 · 3 answers · asked by jonielittle 1 in Science & Mathematics ➔ Engineering
Laminate the iron core of a coil/transformer..
2007-02-13 06:22:21 · answer #1 · answered by Del Piero 10 7 · 1⤊ 0⤋
Eddy currents create losses through heating, and they reduce the efficiency of many devices that use changing magnetic fields such as iron core transformers and alternating current motors. They are minimized by selecting core materials that have low electrical conductivity or by using thin sheets (laminations) of magnetic material.
2007-02-14 09:38:34 · answer #2 · answered by Anonymous · 0⤊ 0⤋
eddie currents are caused by objects movingthrough a fluid. as they move through they displace the fluid. after the object has passed the fluid rushes to refill the vaccuum left by the body.
basic things like improving the objects aerodynamics.
Take a ball traveling through a fluid. leaves large disruptions behind due to its bulky shape leaves a large vaccuum in its wake. thus big eddie currents. ===0@~--
But if you were to tail the back end of the ball off. it would prevent the vortex caused when the fluid rushes back in after the ball. it effecively directs the fluid back into a uniform flow.
===0>>===
examples of this can be seen on acyclists helmet. note how it tails off to a point.
mackey xx
2007-02-13 15:26:49 · answer #3 · answered by Mackey God 2 · 0⤊ 0⤋