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Q. The voltage increase of an amplifier without feedback is 100. If negative feedback is functioned with feedback fraction 0.1, compute the voltage gain with feedback.
A F = A / 1 + A β
= 100 / 1 + 100 X 1/10
= 100 / 11 = 9.09
Q. Illustrate how do you find the refractive index of a liquid by using total internal reflection? Answer:- Using Snell's law n (1) = (n (2) x sin angle (2)) / sin angl
average or mean value of AC
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the numerical ratio of displacement to the distance covered is always ???????????????
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