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Explain factors that change the resistivity of conducting materials.
Temperature- Electrical resistance of most metals rises with increase of temperature whereas those of semiconductors and electrolytes reduce with increase of temperature.
Alloying- It is another factor, that affects the resistivity of a material. With the addition of several impurities to a metal, its resistivity can be changed. It has higher resistivity than that of pure metal.
Mechanical stressing-If a material undergoes a mechanical treatment, its resistivity changes because of mechanical distortion of the crystal structure. For example annealing decreases the resistivity.
Age Hardening- it increases the resistivity of an alloy.
Q. Show procedure of divide the decimal number by 2? For this procedure (method), divide the decimal number by 2, if the remainder is 0, on the side write down a 0. If the rema
deriving formula of the frictional force
kindly tell me which text book is usefull forlearn the basic electricle.
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Machine Language ( First Generation Language) As we have already discussed that all digital circuits can identify only two states which can be specified by 0 and i henc
What are the advantages of wired-AND connection of digital IC
Q. The energy stored in a 2-µH inductor is given by w L (t) = 9e -2t µJ for t ≥ 0. Find the inductor current and voltage at t = 1 s.
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Explain the Third Group of 32 ASCII Character? The third group of 32 ASCII characters is set aside for the upper case alphabetic characters. The ASCII codes for the characters
Relays a) Sketch the schematic symbol for a relay with a single pole changeover switch b) Determine the coil resistance and determine the current at 12Vdc c) Connect the r
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