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प्रश्न
Write the functions of the transducer and repeaters.
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उत्तर
The function of a transducer is to convert one form of energy into another form. A microphone at the transmitting station is one of the examples of a transducer.
The function of a repeater is to regenerate the signal which can be transmitted forward. A repeater is a combination of a receiver, amplifier, and a transmitter. A repeater receives the signal, amplifies it and then retransmits it forward.
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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:
Modulator
Write the functions of the following in communication systems:
Transducer
Write the functions of the following in communication systems:
Receiver
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.
Distinguish between point to point and broadcast modes of communication. Give an example of each.
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.
Figure shows a communication system. What is the output power when input signal is of 1.01 mW? (gain in dB = 10 log10 (Po/Pi).
