ISRO Electronics & Communication (ECE) 2009 - Question 22

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Topic: Electronics Engineering

When signal frequency is 2000 kHz and IF is 455 kHz, the image frequency could be

  • A. 2910 kHz
  • B. 1645 kHz
  • C. 2455 kHz
  • D. 2090 kHz

Answer: A. 2910 kHz

Explanation: Image frequency $=f_{s}\pm2f_{IF} = (2000+910)kHz = 2910~kHz$

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