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Give the properties and application of glass.
Glass - It is an inorganic material made by the fusion of various metallic oxides. The properties of glass are as -
Glass is transparent, hard and brittle. It is insoluble in water and usual organic solvents. Glass has low dielectric loss, slow ageing and also good mechanical strength. Glass is susceptible to destruction while sudden and high temperature cycles are applied
Uses - It is used in moulded insulating devices as electrical bushings, fuse bodies, insulators. It is used as a dielectric in capacitors. Television tubes and Radio, electrical laminated boards also utilize glass
Glass Products
a) Silica glass or fused quartz
b) Borosilicate glass or Pyrex
c) Fibre glass insulation
d) Epoxy glass
Impurities in Semiconductors Can be added in accurately controlled amounts. Can modify the electronic and optical properties. Used to change conductivity over wide ra
Breifly explain abrasive jet machining in Briefly explain the following key terms in electrochemical machining (a) Electrolytes (b) ECM tooling techniques with suitable ex
how to change galvanometer to ohmmeter
Q. Consider an RL series circuit excited by (a) v(t) = 20e -2t V, and (b) v(t) = 20 V. Determine the forced component of the voltage across the inductor for R = 2 and L = 2H.
Q. Show Maximum Differential Input Voltage of amplifier? This is the maximum value of differential input voltage v p - v n that can be applied without damaging the op amp.
Merits and Demerits of Voltage divider bias: Merits: 1. Not like the above circuits, only one dc supply is essential. 2. Operating point is approximately independent o
Two single-phase 60-Hz sinusoidal-source generators (with negligible internal impedances) are supplying to a common load of 10 kW at 0.8 power factor lagging. The impedance of the
Q. A balanced three-phase, wye-connected, 2400- V, 60-Hz source supplies two balanced wye- connected loads in parallel. The first draws 15 kVA at 0.8 power factor lagging, and the
Give the properties and application of cotton. Cotton : It is base material for insulating fibres. Properties: It can be enhanced by impregnating with varnish. 1)
Explain i onic polarization. Ionic polarization is polarization that is caused by relative displacements between negative and positive ions in ionic crystals (for illustrati
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