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Surgan Posted 17 years ago
Grammar

Magnetostriction oscillator

It is one of the method 2 produce ultrasonic waves.Here The Principle is When the rod of ferromagnetic substance is kept in an alternating magnetic field,The rod will expand & contract.i.e,there will be change in length.Here Emotion: thinkingMy doubt is How the iron rod will get elongation & contraction?

please tell me the answer very soon.If you clear my doubt means, I will be so happy.Emotion: smile

please send ur name 2 me
  

Top answer

the iron rod contains dipoles arranged arbitrarily. when it is magnetised these dipoles will align in a regular fashion. , the rod gets either expanded or contracted

— Anonymous

  • the iron rod contains dipoles arranged arbitrarily.
  • when it is magnetised these dipoles will align in a regular fashion.
  • , the rod gets either expanded or contracted
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7 Answers
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the iron rod contains dipoles arranged arbitrarily. when it is magnetised these dipoles will align in a regular fashion. As a result there will be change in its dimension i.e., the rod gets either expanded or contracted
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due to continuous vibration it causes some loss molecular atom of ferromagnetic substance
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the iron is expanded and contracted because, the capacitor acting oscillator circuit, producing current and it is passed at the end of the coil(rod L1)and it is vibrated.Thats it. bye from sindhu.
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i think you are mistaken the magnetro striction oscillaotr working on the principle of faradeys electromagnetic induction e=- L di/dt while high current flow through the oil emf will be produced there is nochanging in the coils lenght

thanks and regards

sathyamoorthy.k iitm
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If you are asking a question regarding physics, you came to the wrong forum. But if you are asking whether your questions are grammatically correct, we may be able to tell you. There are many errors.
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Magnetostriction is phenomenon by which when a ferromagnetic material is kept parallel to a magnetic field, it undergoes change in size(i.e., elongation).

It is due to the magnetic field that the rod expands but the expansion is not very much visible to our eye.

Venkat
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ITS NOT EXPANDS AND CONTRACT IT WILL THROWN IN TO VIBRATION IN LONGITUDINAL AXIS
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