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Define about the Graphite Structure
Graphite is the allotropic form of carbon. In case of graphite the carbon atoms are arranged in regular hexagons in flat parallel layers and every carbon atom covalently bonds with three atoms in a this hexagonal layer. The remaining electron is delocalized among the planes forming a weak bond among the parallel layers. As the bonding between these parallel layers are weak, the layers are simply separable from each other and is the cause for softness and lubricating action of graphite.
For higher current rating application, resistance wires with extremely large cross sections are required. The necessary large cross sections are produced in the form of resistance
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Materials, which provide a path to the magnetic flux, are classified as (A) Insulating materials. (C) Magnetic materials. (B) Semi conducting materials. (D) Die
Illustrate the term semiconductor laser. Semiconductor Laser (Laser diode): It is a laser wherein semiconductors (characteristically direct band-gap semiconductors) can be u
Kerr effect (J. Kerr; 1875): The ability of certain substances to refract light waves differently whose vibrations are in distinct directions while the substance is placed wit
How are appliances we use in the domestic circuit interlinked? What are the benefits of this connection?
define like and unlike parallel forces
Lens: A transport refractive body bonded by one or two spherical surface known as lens. There are various kinds of lenses. e.g. Double convex Lens Double concave lens
The number of electrons in one molecule of are: (1)22 (2)44 (3)66 (4)88 Ans: 22
A carbon steel plate (thermal conductivity = 45 W/m o C) (600 x 900 x 25) mm 2 is maintained at 310 o C. Air at 15 o C bellows over the hot plate. If convection heat transfer co-e
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