The standard induction in reference to determinations of hysteresis is generally taken as 2500, while the loss is expressed in watts per lb.
In hardened iron and steel the effect can scarcely be detected, and in weak fields these metals exhibit no magnetic hysteresis of any kind.
The results of experiments as to the effect of magnetization were for long discordant and inconclusive, sufficient care not having been taken to avoid sources of error, while the effects of hysteresis were altogether disregarded.
In response to the demand, manufacturers have succeeded in producing transformer plate in which the loss of energy due to hysteresis is exceedingly small.
Rhoads[87] obtained a cyclic curve for iron which indicated thermo-electric hysteresis of the kind exhibited by Nagaoka's curves for magnetic strain.
If now the alternations are performed so rapidly that time is not allowed for more than the first sudden change in the magnetization, there will be no hysteresis loss, the magnetization exactly following the magnetizing force.
The complicated hysteresis effects which attend magnetic elongation and retraction have been studied by H.
The effects of temperature upon hysteresis were also carefully studied, and many hysteresis loops were plotted.
Working with two different specimens, he found that the hysteresis loss in ergs per cubic centimetre (W) was fairly represented by 0.
This illustrates the first stage in the process of magnetization, when the moment is proportional to the field and there is no hysteresisor residual magnetism (see ante).
Reactance obstructs the current by setting up a reverse pressure, and so reduces the current in the circuit, without wasting much energy, except by hysteresis in any iron magnetized.
This is illustrated by the fact that a peaked wave causes less hysteresis loss in a transformer core than a flat topped wave, owing to the higher form factor of the peaked wave.
The armature coils are form wound and the core is built of sheet steel laminations, annealed and japanned to prevent hysteresis and eddy current losses.
The core is built up of iron, laminated and japanned to prevent eddy currents and hysteresis losses.
The laminations are punched separately and then carefully annealed to reduce hysteresis losses.
Sub-station transformers produce considerable heat, due to the hysteresis and eddy currents, and it is necessary to get rid of it.
The value of the hysteresis loss is therefore approximately 1½ per cent.
The difference in the two curves is due to the lag of the magnetization behind the magnetizing current, and is caused by the hysteresis of the iron of the armature core.
The electrical losses consist of the eddy current loss, hysteresis loss, armature resistance loss, and field resistance loss.
We should expect too--and we find--that hysteresis is more prominent in weak gels than in strong.
Thus there is hysteresisin the relation of magnetization to magnetic force.
Iron and mild steels showing remarkably little hysteresis are now specially manufactured for use in the construction of electrical machinery.
These modifications, which may be called phenomena of the hysteresis of dilatation, may be followed in very appreciable fashion by means of a glass thermometer.
So also the modifications which the phenomena of magnetic hysteresis or the variations of resistivity have just demonstrated.
These wires are annealed or softened to reduce the hysteresis loss that would occur.
Effect of hysteresis is very clearly seen (see A, fig.
If the magnetization curve of the particular quality of iron used for armature plates be known, the hysteresis loss may be calculated approximately.
Greater hysteresis loss, caused by denser flux in the teeth; 2.
The loss of power due to armature resistance is easily found by Ohm's law, but the hysteresis and eddy current losses, known collectively as iron losses, are not so easily determined.
Greater hysteresis loss on account of denser flux in the teeth; 4.
The loss due to hysteresis per pound of iron in the core, does not vary with the thinness of the core plates; it can be reduced only by the use of a material having a low hysteretic coefficient.
It was introduced in an effort to avoid the losses due to eddy currents and hysteresis present in the other types of armature.
Hysteresis means to "lag behind," hence its application to denote the lagging of magnetism, in a magnetic metal, behind the magnetizing flux which produces it.
The term hysteresis has been given by Ewing to the subject of lag of magnetic effects behind their causes.
The hysteresis losses in iron are so great that an iron core, even if finely subdivided, is heated in an incredibly short time.
But if such is the case I attribute it solely to the hysteresis and Foucault current losses in the core.
The current being one of very high frequency, will, if it be of some strength, soon bring the iron core to a noticeably higher temperature, as the hysteresis and current losses are great with such high frequencies.
It is, to be exact, included in the expression "iron losses," as the precise meaning of this term signifies not only the hysteresis and eddy current losses but the copper loss in the primary coil when the secondary is open.
With a given quality of iron how does the hysteresis loss vary?
In construction, what is done to obtain minimum hysteresis loss?
It causes rapid deterioration of the insulation, increased hysteresis losses, and greater fire risk.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "hysteresis" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: electromagnetism; gain; holdup; hysteresis; lag; magnetism
