Question

Mention the function of any two of the following used

(i) Transducer

(ii) Repeater

(iii) Transmitter

(iv) Bandpass Filter

Answer 1

(1) Transducer: —

It is an electric device which converts energy from one form to another form.

e.g. microphone, which converts sound energy into electric energy and vice − versa.

(2) Repeater: —

It is an electronic device used in transmission system to regenerate the signal. It picks up a signal amplifies it and transmits it to receiver.

(3) Transmitter:—

Transmitter is an electronic device which is used to radiate electromagnetic waves. The purpose of the transmitter is to boost up the signal to be radiated to the required power level, so that it can travel long distances. The most familiar transmitters are mobile transmitter antennas, radio and T.V. broadcasting antennas etc.

(4) Bandpass filter:—

It is an electronic filter, which pass the certain band (range) of frequency and reject rest of all.