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Ferromagnetic materials exhibit magnetic behaviour similar to ferromagnetism below a critical temperature, known as curie temperatures. Above which it turns out to be paramagnetic. The origin of ferrimagnetisms is based on magnetic ordering. All atoms have their spins aligned in one direction and all other atoms have their spins aligned in the opposite directions. The oppositely directed magnetic moments have different magnitude and do not cancel. The net effect is that the crystal can possess magnetization even in the absence of an applied field. All useful magnetic materials in electrical engineering are either ferromagnetic or ferrimagnetic.
Ceramics are materials made by higher temperature firing treatment of natural clay and certain inorganic matters. Structurally ceramics are crystal bonded together. Other materials
Examples of like and unlike parallel forces?
while taking readings in a deflection magnetometer the deflection should be between 30 degree and 60 degree.why?
Explain irreversible process A process which takes the system to the non equilibrium state is known as irreversible process. *It can't be retraced in the reverse direction.
What are the branches of physics? The basic branches of physics are a) Classical mechanics b) Electromagnetism (including optics), c) Relativity, d) Thermodynamics,
Explain about the term ultrasonics shortly. The world ultrasonics applies to sound waves which vibrate at a frequency higher than the frequency which can be heard through the h
Concept of wave front The basis of Huygens wave theory of light is his principle concerning construction of wave front. When a disturbance from a light source travels i
Although it needs not concern us further, we also consider that the flow is irrotational. To check for this property, let a tiny grain of dust goes with the fluid. Although this te
What is Illumination? A body that gives off light is called luminous, like all those glow-in-the-dark toys, and a body that gives off light when it is heated is called incandes
what is electric field
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