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Electronics and Communication Communication Systems Difficulty: Medium

A woofer should be fed from the input through a If the covariance of two random variable X and Y is µ XY , their correlation coefficient ρ XY is: In a servo-system, the device used for providing derivative feedback is known as: Assertion (A): A p-n junction has high resistance in reverse direction. Reason (R): When a reverse bias is applied to p-n junction, the width of depletion layer increases. A three stage telephone switching structure is to have 128 input and 128 output terminals. There are 16 first stage and 16 third stage matrices. To avoid blocking the number of intermediate paths required is