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Which of the following noise becomes significant at high frequencies?
  • a)
    Shot noise 
  • b)
    Random Noise
  • c)
    Impulse Noise
  • d)
    Transit time noise
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following noise becomes significant at high frequencies?a...
Various types of internal noise are:
  • Shot Noise:
  1. These Noises are generally arising in the active devices due to the random behaviour of Charge particles or carries
  2. In the case of the electron tube, shot Noise is produced due to the random emission of electron form cathodes
  • Partition Noise:
  1. When a circuit is to divide in between two or more paths then the noise generated is known as Partition noise
  2. The reason for the generation is random fluctuation in the division
  • Low- Frequency Noise:
  1. They are also known as FLICKER NOISE
  2. These types of noise are generally observed at a frequency range below few kHz
  3. Power spectral density of these noise increases with the decrease in frequency
  4. That's why the name is given Low- Frequency Noise
  • High- Frequency Noise:
  1. These noises are also known as TRANSIT- TIME Noise
  2. They are observed in the semiconductor devices when the transit time of a charge carrier while crossing a junction is compared with the time period of that signal
  • Thermal Noise:
  1. Thermal Noise is random and often referred to as White Noise or Johnson Noise
  2. Thermal noise is generally observed in the resistor or the sensitive resistive components of a complex impedance due to the random and rapid movement of molecules or atoms or electrons
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Which of the following noise becomes significant at high frequencies?a)Shot noiseb)Random Noisec)Impulse Noised)Transit time noiseCorrect answer is option 'D'. Can you explain this answer?
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Which of the following noise becomes significant at high frequencies?a)Shot noiseb)Random Noisec)Impulse Noised)Transit time noiseCorrect answer is option 'D'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about Which of the following noise becomes significant at high frequencies?a)Shot noiseb)Random Noisec)Impulse Noised)Transit time noiseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following noise becomes significant at high frequencies?a)Shot noiseb)Random Noisec)Impulse Noised)Transit time noiseCorrect answer is option 'D'. Can you explain this answer?.
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