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Question

Mention the functions of any two of the following used in communication system:
(i) Transducer
(ii) Repeater
(iii) Transmitter
(iv) Bandpass Filter

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Solution

(i) A transducer converts one form of energy to another.
(ii) A repeater picks up signals from transmitter, amplifies it and transmits to the receiver.
(iii) Transmitter comprises of signal source, modulator and transmitting antenna. Transmitter makes signal compatible for communication channel.
(iv) Bandpass filter is a device that passes energy with only one frequency.

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