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Question
A device X used in communication system can convert one form of energy into another. Name the device X. Explain the function of a repeater in a communication system.
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Solution
The device X used in communication system, which can convert one form of energy into another is called a transducer.
Function of repeater: A repeater is used to increase the range of the transmission in communication systems with the help of a set of receiver and transmitter. They are erected at suitable locations in between the transmitter and the receiver. Each repeater receives the transmitted signal, amplifies it properly keeping its original form intact and then relays it to the next repeater.
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