CS6304 Analog and Digital Communication Important questions
CS6304 Analog and Digital Communication Important questions Regulation 2013 Anna University free download. Analog and Digital Communication CS6304 Important questions pdf free download.
Sample CS6304 Analog and Digital Communication Important questions:
1. Define noise and noise figure.
Noise is defined as any unwanted form of energy, which tends to interfere with proper reception and reproduction of wanted signal.
Noise figure is defined as the ratio between Signal to Noise ratio at the output to the Signal to Noise ratio at the input
2. What are the types of external noise and internal noise? (CS6304 Analog and Digital Communication Important questions)
External noise can be classified into Atmospheric noise, Extraterrestrial noises,Man –made noises or industrial noises.Internal noise can be classified into Thermal noise, Shot noise, Transit time noise, Miscellaneous internal noise.
3. What are the types of extraterrestrial noise and write their origin.
The two type of extraterrestrial noise are solar noise and cosmic noise Solar noise is the electrical noise emanating from the sun. Cosmic noise is the noise received from the center part of our galaxy, other distant galaxies and other virtual point sources.
4. Explain thermal noise. (CS6304 Analog and Digital Communication Important questions)
Thermal noise is the name given to the electrical noise arising from the random motion of electrons in a conductor.
5. Give the expression for noise voltage in a resistor.
The mean square value of thermal noise voltage is given by Vn2 = 4 K T B R where K – Boltz man constant, R – resistance, T – Absolute temperature, B – Bandwidth
6. Explain White Noise. (CS6304 Analog and Digital Communication Important questions)
Many types of noise sources are Gaussian and have flat spectral density over a wide frequency range. Such spectrum has all frequency components in equal portion, and is therefore called white noise. The power spectral density of white noise is independent of the operating frequency. (CS6304 Analog and Digital Communication Important questions)
| Subject Name | Computer Architecture |
| Subject Code | CS6304 |
| Regulation | 2013 |
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