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It is suitable for growing semi-conductively alloys like gallium arsenide. A typical arrangement is furnished with an induction heater that provides a controllable temperature gradient along the furnace. The boar with the material is placed in sealed tube and moved from high temperature zone to low temperature zone. The chemical purified gallium arsenide material is melted at about 1250 degree centigrade in high temperature zone and slowly passes into lower temperature zone where it solidified from one end to about 620 degree centigrade. The temperature is chosen so that a small amount of arsenide always kept in this zone will provide an arsenic atmosphere in which crystallisation of gallium arsenide occurs.
Production of electricity by light: The Photovoltaic Cell or Solar Cell. A photovoltaic cell generates an emf when light falls onto it. Several forms of photovoltaic cell exi
Which phrase would be incorrect to use: (1)A molecular of a compound (2)A molecule of an element (3)An atom of an element (4)None of these Ans: (2)A molecule of a
The output of an OR gate is linked to both the inputs of a NAND gate. Draw the logic circuit of this combination of getes and write its truth table. Illustrate a plot of potent
if a body contain n1 electron and n2 proton what is the total charge on the body?
A 3Kg bar of aluminum has to be heated from 25 degrees Celsius to 75 degrees Celsius. how many calories are needed to achieve this temperature increase?
A long solenoid has a diameter of 10.4cm. When a current I exists in its windings, a uniform magnetic field of magnitude B=37.7 mT is produced in its interior. By decreasing I, the
When an orchestra is tuning up, the first violinist plays a note at 256 Hz. a. What is the wavelength of that sound wave if the speed of sound in the concert hall is 340 m/s?
Time Base Control 2 Shows the effect of modifying the time base control on the show while there is an input voltage varying in time.
define biased clipper?
Which statement concerning the electric potential of a solid object made out of a perfectly conducting medium is most correct? Answer: It is the electric field which is ze
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