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What is it called when the noise is present in the transmission line but gets canceled at the receiver?(a) Cancellation mode(b) Common mode cancellation(c) Common mode rejection(d) Rectification |
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Answer» Right answer is (c) Common mode rejection To elaborate: When the noise affects the transmission, its effect is on both the wires but since they are 180° out of phase when the signal reaches the receiver the noise gets cancelled out. This is called common-mode rejection, and noise reduction can be as great as 60 to 70 dB. |
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