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प्रश्न
Write the functions of the following in communication systems:
Transducer
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उत्तर
Transducer: A transducer is used to convert a non-electrical signal like a voice signal into electrical form before sending it as an input to a transmitter.
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संबंधित प्रश्न
Write the functions of the following in communication systems:
Transmitter
Write the functions of the following in communication systems:
Demodulator
Explain the term demodulation used in a communication system.
Distinguish between broadcast mode and point-to-point mode of communication and give one example for each.
Distinguish between point to point and broadcast modes of communication. Give an example of each.
Write the function of receiver in communication system.
Write the functions of the transducer and repeaters.
A 1 KW signal is transmitted using a communication channel which provides attenuation at the rate of – 2dB per km. If the communication channel has a total length of 5 km, the power of the signal received is `["gain in dB" = 10 log ("P"_0/"P"_"i")]`
Which of the following would produce analog signals and which would produce digital signals?
- A vibrating tuning fork.
- Musical sound due to a vibrating sitar string.
- Light pulse.
- Output of NAND gate.
An audio signal is modulated by a carrier wave of 20 MHz such that the bandwidth required for modulation is 3 kHz. Could this wave be demodulated by a diode detector which has the values of R and C as
- R = 1 kΩ, C = 0.01 µF.
- R = 10 kΩ, C = 0.01 µF.
- R = 10 kΩ, C = 0.1 µF.
