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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
What is the function of a 'Repeater' used in communication system?
Write the functions of the following in communication systems:
Modulator
Write the functions of the following in communication systems:
Receiver
Write the functions of the following in communication systems:
Demodulator
Explain the term demodulation used in a communication system.
Distinguish between point to point and broadcast modes of communication. Give an example of each.
Write the functions of the transducer and repeaters.
What is the function of a bandpass filter used in a modulator for obtaining AM signal?
Audio sine waves of 3 kHz frequency are used to amplitude modulate a carrier signal of 1.5 MHz. Which of the following statements are true?
- The sideband frequencies are 1506 kHz and 1494 kHz.
- The bandwidth required for amplitude modulation is 6 kHz.
- The bandwidth required for amplitude modulation is 3 MHz.
- The side band frequencies are 1503 kHz and 1497 kHz.
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.
