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प्रश्न
Distinguish between broadcast mode and point-to-point mode of communication and give one example for each.
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उत्तर
The difference between point-to-point mode of communication and broadcast mode of communication :
| Point-to-point mode of communication | Broadcast mode of communication |
| Point to point communication mode is the communication over a link between a single transmitter and a receiver. | In broadcast mode large number of receivers are linked to a single transmitter. |
| Only one receiver is involved here | A large number of receivers may be involved. |
| Telephone is an example of such a system. | Radio is example of such system. |
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संबंधित प्रश्न
Explain the terms Attenuation used in Communication System.
Write the functions of the following in communication systems:
Transmitter
Write the functions of the following in communication systems:
Transducer
Write the functions of the following in communication systems:
Receiver
A device X used in communication system can convert one form of energy into another. Name the device X. Explain the function of a repeater in a communication system.
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.
Write the functions of the transducer and repeaters.
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.
