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Mr. Dubey • 100.64K Points
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Q. If a frequency multiplier has a multiplication factor of 10, then the increase in noise level due to frequency multiplication is:

  • (A) 10 db
  • (B) 20 db
  • (C) 25 db
  • (D) 15 db
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Explanation by: Mr. Dubey
for a frequency multiplier, the increase in noise power is given by 20 log n, where n is the multiplication factor of the multiplier. substituting in the below equation, increase in noise level is 20 db.

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