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Which of the following statements is/are correct? 1. The purpose of the transmitter is to convert the message signal produced by the source of information into a form suitable for transmission through the channel. 2. The receiver reconstructs a recognizable form of the original message signal for delivering it to the user of information.

Which of the following statements is/are correct? 1. The purpose of the transmitter is to convert the message signal produced by the source of information into a form suitable for transmission through the channel. 2. The receiver reconstructs a recognizable form of the original message signal for delivering it to the user of information. Correct Answer Both 1 and 2

The correct answer is Both 1 and 2.

Key Points

  • In a communication system, the transmitter is located at one place, the receiver is located at some other place (far or near) separate from the transmitter and the channel is the physical medium that connects them.
  • Depending upon the type of communication system, a channel may be in the form of wires or cables connecting the transmitter and the receiver or it may be wireless.
  • The purpose of the transmitter is to convert the message signal produced by the source of information into a form suitable for transmission through the channel. Hence, Statement 1 is correct.
  • If the output of the information source is a non-electrical signal like a voice signal, a transducer converts it to electrical form before giving it as an input to the transmitter.
  • When a transmitted signal propagates along the channel it may get distorted due to channel imperfection.
  • Moreover, noise adds to the transmitted signal and the receiver receives a corrupted version of the transmitted signal.
  • The receiver has the task of operating on the received signal.
  • It reconstructs a recognizable form of the original message signal for delivering it to the user of information. Hence, Statement 2 is correct.
  • There are two basic modes of communication: point-to-point and broadcast.
  • In point-to-point communication mode, communication takes place over a link between a single transmitter and a receiver.
    • Telephony is an example of such a mode of communication.
  • In contrast, in the broadcast mode, there are a large number of receivers corresponding to a single transmitter.
    • Radio and television are examples of the broadcast model of communication

          

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