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Explain the effect of temperature on the resistivity of conducting materials.
The resistance of most metals rises with rise of temperature whereas that of semiconductors and electrolytes reduces along with increase of temperature. Various metals have vanishing resistivity at absolute zero of temperature. This phenomenon is termed as superconductivity. The resistance of a conductor changes along with temperature according to the law Rt = RO (1 + α t). Here Rt and RO are the resistances at "t" and zero degrees centigrade and α the temperature coefficient of resistance.
Q. The response y(t) of a linear system to a unit-step excitation is y(t) = (4 - 10e -t + 8e -2t )u(t). (a) Find the system function. (b) Find the frequency at which the fo
a) Draw robot configuration. b) Explain the significance of end effectors. c) Define the terms (i) accuracy (ii) Repeatability (iii) Work volume (iv) Control Reso
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Refer to the op amp circuit shown below. Let R 1 = 140 k_, R 2 = 10 k_, R 3 = 10 k_, R 4 = 20 k_, RL = 10 k_. Assume the op amp is ideal. Find the equation relating the
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what are the disadvantages of superposition theorem?
Q. In a hundred-line exchange 24 two-motion selectors are used. Draw schematic you suggest for this exchange and illustrate its working. How many simultaneous calls can be made du
Requirements of equalizer connection
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