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Magnetic cores are made up of thin ,lightly insulated ( coating of varnish ) laminatians to produce power loss in cores due to eddy current phenomenon . as a result ,the net cross sectin area of the core occupied by the magnetic material is less than its grosss cross section ; their ratio ( less than unity ) is known as stacking factor . depending upon the thicknesss of lamination ,stacking factor vary from 0.5 to 0.95 approching unity asthe lamination thickness increase
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What are ice cores for climate analysis drawn from?
The cores are drilled from the ice itself - ice sheets in Antarctica and Greenland.
Earth's magnetic field include an explanation of how scientist believe it is generate and two ways in which it helps people on earth?
The Earths magnetic field is generated by the cores fluid metal rotating like a dynamo. The fields generated make an impressive electromagnet. We use it for navigation. The Aurora Borealis is caused when cosmic rays strike it. That aids our understanding of both cosmic radiation and the flux density of the field.
Which shape has the smaller demagnetization factor a thin film madia along the direction perpendicular to the plane or a sphere along any central axis?
The smallest demag. factor is the case of thin film, disc or needle parallel to the magnetic field. Actually it is zero. The demag. factor of sphere is N=1/3, needle or long rod perpendicular to field has N=1/2. The highest possible demag. factor is 1, it is the case of thin disc or film perpendicular to the magnetic field. Other cases (apart from ellipsoid) must be solved numerically...
Is oil magnetic or non-magnetic?
non-magnetic
What is a magnetic material?
I thing magnetic material is an material that is magnetic
What is the core factors of psychopath?
Magnetic cores are made up of thin ,lightly insulated ( coating of varnish ) laminatians to produce power loss in cores due to eddy current phenomenon . as a result ,the net cross sectin area of the core occupied by the magnetic material is less than its grosss cross section ; their ratio ( less than unity ) is known as stacking factor . depending upon the thicknesss of lamination ,stacking factor vary from 0.5 to 0.95 approching unity asthe lamination thickness increase
What are magnetic cores?
They are a component in transformers.
Is a ROM composed of magnetic cores?
yes
What is the outer cores function?
creating earth's magnetic field:)
What are outer cores prpopertys?
its responsible for Earth's magnetic field.
What is the meaning of stacking factor of a transformer?
it s the ratio of net cross section occupied by the magnetic material to the gross cross section of the core generally, its value s between 0.5 to 0.95
Are silver trade dollars magnetic?
Silver is a not magnetic metal - the most highly magnetic metal is iron - so no unless the cores of the coins are iron
Why binary numbers are used in magnetic cores?
possibly because the magnetic 'direction' is one way or the other - metaphorically "on" or "off" - 'zero' or 'one'
7th sem EEEModel question paper for design of electrical apparatus?
what is stacking factor?
Why are stator cores laminated?
Thin metal laminations are used to minimize the magnetic flux eddy current loss in the stator cores of high-speed, high-performance induction motors.
Why is the earth like a magnetic field?
Because of the continuous flow of iron and nickel through the inner and outer cores of Earth.
Why will one soft iron core in a coil heat up while another similar core with same coil and current not heat up. Could this problem be due to the AC frequency?
Assuming the coils have the same numbers of turns of wire ( and hence should produce the same instenity of magnetic feild ) the coil that heats up may have a higher magnetic reluctance, hence dissapates more of the magnetic energy as heat. Examine the cores closely , laminated cores ( one made of plates ) tend to have a lower magnetic reluctance.
