In which of the following systems multiplexing is not necessary?(a) Telemetry(b) TV broadcasting(c) Satellites(d) Continuous wave transmissionThe question was asked at a job interview.This intriguing question comes from Frequency Division Multiplexing topic in portion Radio Transmitters, Communication Receivers, Multiplexing and Demultiplexing of Avionics

In which of the following systems multiplexing is not necessary?(a) Te

1.	In which of the following systems multiplexing is not necessary?(a) Telemetry(b) TV broadcasting(c) Satellites(d) Continuous wave transmissionThe question was asked at a job interview.This intriguing question comes from Frequency Division Multiplexing topic in portion Radio Transmitters, Communication Receivers, Multiplexing and Demultiplexing of Avionics
Answer» CORRECT ANSWER is (d) CONTINUOUS wave transmission Easiest explanation: Continuous wave transmission such as morse code, multiplexing is not necessary since only two voltage LEVELS are present and each bit is sent one by one. Also, only one information signal is TRANSMITTED whereas in telemetry, TV and satellite communications numerous information is transmitted hence multiplexing is required.

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