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The area of hysteresis loop in a ferromagnetic material of?
Sravsrao
this area represent the energy lost per cycle in ferromagnetic material during the magnetization process by hysteresis and in some cases also by eddy current
magnetic losses and electric losses
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∙ 14y ago
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How can you measure the hysteresis loop of the ferroelectric materials and what is the name of the instruments used for the measurements of the hysteresis loop?
it is agm or vsm
What does hysteresis mean in magnetism?
A hysteresis curve is a plot, graph or some kind of pictorial representation of the relationship between the magnetic field strength (H) and the magnetic flux density (B) of a material under inspection.
Why Soft Iron is suitable for preparing pole pieces in earphones as well as loudspeakers instead of steel?
Soft iron is suitable for preparing pole pieces in headphones as well as loudspeakers instead of steel because soft iron materials have high permeability and low coercive force. They are easily magnetized and demagnetized. Examples of soft magnetic material are silica-steel (Fe-97 and Si-3), Sandust (Al-5, Si-10, Fe-85). Soft iron materials have following characteristics:- Thin hysteresis loop. High permeability. Low coercivity. High susceptibility. Low hysteresis loss. Low eddy current loss. Whereas materials made up of steel have totally different properties i.e. High permeability and High hysteresis loss. Large hysteresis loop. High coercivity residual magnetism.
What kind of material is used in the waterless ground loop in a waterless earth-coupled closed-loop geothermal heat pump system?
A waterless ground loop in a waterless earth-coupled closed-loop geothermal heat pump system typically uses a high-density polyethylene (HDPE) pipe. HDPE is a durable material that is resistant to corrosion and provides good thermal conductivity, allowing for efficient heat transfer between the ground and the heat pump system.
How do convection currents cause the plates to move?
Convection currents occur as hot material expands and rises, and cool material contracts and sinks, much like a conveyor belt. It is new material from the Earth's center that rises and old material that sinks. The rising material pushes old material to the side, driving the lithosphere plates apart. The sinking material causes the plates to be pushed together.
How do you select core in Transformer Design?
The material used in the manufacture of transformer cores must have a hysteresis loop with a very small area, as it is the area of the hysteresis loop that determines the hysteresis losses of the core material. The core material should also be resistive, in order to reduce eddy current losses (which is further improved by laminating the core). Many transformer manufacturers use their own variations on what is basically a silicon-steel.A hysteresis curve, or loop, is a graph of flux density plotted against magnetising force, and basically describes the ease (or difficulty) with which the core material can be magnetised and demagnetised as the magnetising current changes magnitude and direction.
What is the significance of hysteresis?
Hysteresis is the delay between an observed outcome and the quantity of change applied.When a ferromagnetic material is magnetized in one direction, it will not relax back to zero magnetization when the imposed magnetizing field is removed. It must be driven back to zero by a field in the opposite direction. If an alternating magnetic field is applied to the material, its magnetization will trace out a loop called ahysteresis loop. The lack of retraceability of the magnetization curve is the property called hysteresis and it is related to the existence of magnetic domains in the material. Once the magnetic domains are reoriented, it takes some energy to turn them back again. This property of ferrromagnetic materials is useful as a magnetic "memory". Some compositions of ferromagnetic materials will retain an imposed magnetization indefinitely and are useful as "permanent magnets". The magnetic memory aspects of iron and chromium oxides make them useful in audiotape recording and for the magnetic storage of data on computer disks.Variations in Hysteresis CurvesThere is considerable variation in the hysteresis of different magnetic materials.
What is hysteresis loop in stress and strain?
the leading or lagging between the stress and strain is called hysteresis loop
How can you measure the hysteresis loop of the ferroelectric materials and what is the name of the instruments used for the measurements of the hysteresis loop?
it is agm or vsm
What is hysteresis loss?
If the magnetic field applied to a magnetic material is increased and then decreased back to its original value, the magnetic field inside the material does not return to its original value. The internal field 'lags' behind the external field. This behaviour results in a loss of energy, called the hysteresis loss, when a sample is repeatedly magnetized and demagnetized. The materials used in transformer cores and electromagnets are chosen to have a low hysteresis loss. Similar behaviour is seen in some materials when varying electric fields are applied (electric hysteresis). Elastic hysteresis occurs when a varying force repeatedly deforms an elastic material. The deformation produced does not completely disappear when the force is removed, and this results in energy loss on repeated deformations.
Why Soft Iron is suitable for preparing electromagnets?
soft iron B-H curve area is very high and hysteresis loss is proportional to it frequency or no of loop cycles per sec and area of loop so hysteresis loss increases in soft iron as electro magnet
Formula of Hysteresis loss and Eddy current loss?
hysteresis loss = N1/N2 R2/R1 C1/A1 (area of the loop)(vertical sensitivity) (horizontal sensitiivity
How do you determine the work done in a ferromagnet in going round a hysteresis loop?
When a hysteresis loop is plotted on a graph ( X: Current, Y: Magnetic Field Strength ) for the core of any substance, the area covered by the loop (on both sides of the x-axis) will give the total energy involved or work done in one cycle of magnetisation and demagnetisation.
A contour line that forms a closed loop and has small dashes pointing to the inside of the loop represents what?
Hysteresis loops tell about the magnetic properties of a material. E.g. wider loops indicate that the material is magnetically hard (i.e. it retains magnetisation even if the applied field is removed, permanent magnetics have much wider hysteresis loops)whereas thinner loops represent it to be soft (if the magnetic field is removed, the material doens't show any magentism). This is one advantage of hysteresis loops. further, such loops can identify the grain size of a material and much more. hope it answers your question.
How do you reduce the hysteresis loss?
Hysteresis losses are a function of the magnetic characteristics of the magnetic circuit, so there is very little you can do to minimise hysteresis losses other than to reduce the primary voltage to a transformer if that is at all practicable. These losses are really in the hands of the manufacturers who design and manufacture magnetic circuits.
What is hysteresis calibration loop?
In hysteresis materials it represents the energy dissipated in them during the cycle of magnetization & demagnetization (just refer any hysteresis loop diagram) . This is used in many applications especially in aerospace to damp the oscillations in satellite.
Why area of hysteresis loop is change with temperature?
Disorder. Each unit cell has its own dipole moment, which, when there is a net polarisation, are described as ordered. At high T, the direction of the dipole moments randomises, giving a disordered material with no net polarisation.Phase transitions that can open up new possibilities for dipole moments to form. In this case, there is a jump at 0°C, and at 90°C, where the loop becomes taller.
