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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
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
Explain the term demodulation used in a communication system.
Explain the basic concept of mobile telephoning ?
What is the function of a bandpass filter used in a modulator for obtaining AM signal?
A basic communication system consists of ______.
- transmitter.
- information source.
- user of information.
- channel.
- receiver.
Choose the correct sequence in which these are arranged in a basic communication system:
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.
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.
