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Which of the following best describes impulse noise?

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RRB JE CBT 2 (Electronics Engineering) ReExam Official Paper (Held On: 04 Jun, 2025)
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  1. Short bursts of high-amplitude interference 
  2. Noise caused by temperature fluctuations
  3. Continuous low-frequency noise
  4. Gradual signal degradation over time 

Answer (Detailed Solution Below)

Option 1 : Short bursts of high-amplitude interference 
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Detailed Solution

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The correct answer is that short bursts of high-amplitude interference best describe impulse noise.

Explanation:

Impulse noise is characterized by sudden, short-duration, high-amplitude spikes or bursts of electrical interference. These impulses can be caused by various sources like lightning, switching transients, or faulty electrical contacts.

Additional Information

  • Noise caused by temperature fluctuations refers to thermal noise, which is random and continuous.
  • Continuous low-frequency noise might describe flicker noise or other forms of continuous background noise.
  • Gradual signal degradation over time refers to issues like attenuation or component aging, not a type of noise.
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