Advertisements
Advertisements
Question
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.
Advertisements
Solution
The device X used in communication system, which can convert one form of energy into another is called a transducer.
Function of repeater: A repeater is used to increase the range of the transmission in communication systems with the help of a set of receiver and transmitter. They are erected at suitable locations in between the transmitter and the receiver. Each repeater receives the transmitted signal, amplifies it properly keeping its original form intact and then relays it to the next repeater.
APPEARS IN
RELATED QUESTIONS
What is the function of a 'Repeater' used in communication system?
Write the functions of the following in communication systems:
Transmitter
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.
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.
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).
