magnetomotive force वाक्य
उदाहरण वाक्य
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- The magnetomotive force can often be quickly calculated using Amp�re's law.
- I just added a note to the magnetomotive force article to explain this.
- For example, the magnetomotive force \ mathcal { F } of long coil is:
- The gilbert, a unit of magnetomotive force or magnetic potential, was named in his honor.
- A common analogy of a magnetic circuit maps magnetomotive force ( mmf ) to voltage and magnetic flux ( ? ) to electrical current.
- For a closed magnetic circuit ( no air gap ) most core materials saturate at a magnetomotive force of roughly 800 ampere-turns per meter of flux path.
- This model makes magnetomotive force ( mmf ) the analog of electromotive force in electrical circuits, and time rate of change of magnetic flux the analog of electric current.
- Using Hopkinson's law ( magnetic circuit analogue of Ohm's law for electric circuits ) and the definition of magnetomotive force ( magnetic analogue of electromotive force ):
- The unit of magnetomotive force is the ampere-turn ( At ), represented by a steady, direct electric current of one ampere flowing in a single-turn loop of electrically conducting material in a vacuum.
- Another method is to pass an electric current directly through the ingot while it is in a magnetic field, with the resulting magnetomotive force carefully set to be just equal to the weight in order to hold the liquid suspended.
- However, if the magnetomotive force is well above saturation, so the core material is in saturation, the magnetic field will be approximately the saturation value " B sat " for the material, and won't vary much with changes in " NI ".
- Specifically, whereas KVL states that the voltage excitation applied to a loop is equal to the sum of the voltage drops ( resistance times current ) around the loop, the magnetic analogue states that the magnetomotive force ( achieved from ampere-turn excitation ) is equal to the sum of MMF drops ( product of flux and reluctance ) across the rest of the loop . ( If there are multiple loops, the current in each branch can be solved through a matrix equation much as a matrix solution for mesh circuit branch currents is obtained in loop analysis after which the individual branch currents are obtained by adding and / or subtracting the constituent loop currents as indicated by the adopted sign convention and loop orientations . ) Per Amp�re's law, the excitation is the product of the current and the number of complete loops made and is measured in ampere-turns.
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