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The magnetic field used in machines is quantified in terms of its flux density (symbol: B), expressed in teslas. The flux density is established by the magnetic field strength (H), expressed in amperes per metre, set up in the field windings.
As the magnetic field strength increases, the flux density increases until it reaches saturation. This is the point when the magnetic domains within the magnetic circuit are all aligned. At this point, any further increase in magnetic field strength will fail to increase the flux density.
So saturation of the magnetic circuit limits the flux density of the field.
What else can I help you with?
Why is there a limit to the magnetic force that a material can produce?
because there is a magnetic field round an object
Why is there a limit to magnetization?
There is a limit to magnetization called saturation because all magnetic moments in a material align in the same direction. Once this alignment is achieved, further increase in magnetic field strength will not result in increased magnetization. At saturation, the material cannot hold any more magnetic domains to align with the external field.
What is the safe limits of magnetic field?
For continuous exposure, the safe limit for occupational exposure to magnetic fields is 0.5 millitesla (mT) according to the International Commission on Non-Ionizing Radiation Protection (ICNIRP) guidelines. For the general public, the recommended limit is 0.1 mT.
How does saturation affect the magnetic circuit?
Saturation in a magnetic circuit refers to the point at which the magnetic material can no longer be magnetized fully. Once saturation occurs, any further increase in magnetic field strength will not result in a significant increase in magnetization. This can limit the amount of magnetic flux flowing through the circuit and reduce the overall efficiency.
What affect does a changing magnetic field strength have on an ac generator power output?
By increasing the field current (current flowing through the rotor windings), the magnetic field generated by these windings will increase. This increased magnetic field will result in a larger current flow in the stator windings (the output of the generator). This in turn causes a larger pull against the rotation of the rotor, causing it to slow down. The governor will then kick in, allowing more steam/ power to the prime mover to keep speed steady. Assuming all is working correctly, the output power will increase as the magnetic field is increased (to a limit).
What type of metal can repel a magnet?
All metals can repel a magnet. The degree to which they do so is dependent on whether they are ferromagnetic, paramagnetic, or diamagnetic.A ferromagnetic metal is one which has a magnetic field regardless of whether or not they are subjected to an applied or external magnetic field. These are often called permanent magnets. The strength of their magnetic field varies depending on the strength of the external magnetic field, but has a limit outside of the external field. Iron is an example of a ferromagnetic metal.A paramagnetic metal is one which has a magnetic field only when subjected to an applied or external magnetic field. The strength of a paramagnetic metal's magnetic field tends to vary proportionally with the external magnetic field, and so these are often the strongest magnets that we see. An electromagnet is the easiest way to conceptualize the way a paramagnetic metal works. When an electromagnetic circuit is turned on, it's a magnet, when it's turned off, it's not. Tungsten is an example of a paramagnetic metal.Diamagnetism is a property of all materials, not just metals. This property is kind of hard to explain classically, so just think of it as a material's magnetic field created, when subjected to an external magnetic field, because of all of the material's electrons being pulled one way, and all of the material's protons being pushed the other way. The strength of a magnetic field from a purely diamagnetic material is farweaker than that of a paramagnetic or ferromagnetic material's magnetic field.
Why the generator field rheostat kept at maximum position?
There is nothing to limit current until opposing magnetic fields build up at generator operating speed-windings will overheat and burn.
Is there a limit to magnetisation?
yes I have to either disagree and say no or you have answered regarding a given magnet or magnetised object. The earth is proof the answer is no, as it is encapsulated in a magnetic field, size of field is not limited - magnetisation or application of magnetic properties has no limits - magnetic fields of a magnetised object are limited, but not magnetisation or the capacity to magnetise.
How high can you advance in the field of orthodontics?
sky is the limit, we have to think beyond limit
Is there a limit to magnetisation and why?
Yes, there is. To overly-simplify matters, magnetisation relies on the amount of coherently orientated unpaired electrons that exist in the material. This amount is obviously not infinite (because the material only has so many electrons, unpaired or otherwise) and so will hit a cap for the material in question. There are many types of magnetisation and all sorts of intricacies exist but this is a good way to look at it.
What is the scale limit for the maximum weight that can be measured on the industrial weighing machine?
The scale limit for the maximum weight that can be measured on the industrial weighing machine is typically determined by the capacity of the machine, which can range from a few pounds to several tons, depending on the specific model.
Why is the Earth's core magnetic if its temperature is above the level at which metal is magnetic?
Moving electrical currents do NOT have an upper temperature limit. You're thinking if permanent magnets.
