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Mica is an inorganic mineral. It is one of the best natural insulating materials available. In spite of the tremendous progress made in insulation technology this material and its product still find many applications in the present day. The qualities of mica can be classified on visual basic such as clear, stained spotted, etc. Mica sheets are used for the insulating leaves between commentator segments. These are however not obtainable in large thickness. Thus for commentator of considerable dimensions mica has been developed. This is achieved by sticking mica splitting on sheets of paper by means of a drying varnish such as shellac. These sheets are pressed between steam heated plates and then cooled. Mica is used for slot linings of have machines and for making bushes. Mica is usually avoided for slot linings of machines because its space factor is low. This means that adequate dielectric strength may be obtained with thinner layers of cotton tape and like materials than of mica.
If 10 9 electrons move out of a given body to another body every second, how much time is required to get a total charge of 1C of the other body? ------------------------------
give examples?
How nicol prism can be used as a polariser and an Analyser
examples showing liquids exert pressure
Define the use of quartz crystal method to detect ultrasonic waves. Quartz crystal method: This method is based onto the principle of Piezo-electric effect. While one pair o
ohm; Omega; O (after G. Ohm, 1787-1854): The derived SI unit of electric resistance, described as the resistance among two points on a conductor while a constant potential dif
Q. The image of a small electric bulb fixed on the wall of a room is to be obtained on the opposite wall ma way by means of a large convex lens. What is the maximum possible focal
Michelson-Morley experiment (A.A. Michelson, E.W. Morley; 1887) Probably the most popular null-experiment of all time, designed to check the presence of the proposed "lumenife
QUESTION 1 A car of mass 800 kg is pulling a trailer of mass 300 kg up the slope of angle ? to the horizontal where sine ? = 1/200. Resistance to motion (apart from gravity) is 1.
Circular Polarisation Circular polarisation produced from a linearly polarised electromagnetic wave through a quarter-wave plate.
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