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  9. Q249

RRB Junior Engineer / DMS / CMA 2015 · Question 249 of 480

The summation of 50 dBA noise level with another 50 dBA noise level is equation to

  1. A100 dBA
  2. B50 dBA
  3. C53 dBACorrect
  4. D56 dBA

Answer: C. 53 dBA

Official answer key verified. Detailed explanation coming soon.

Source: RRB JE 28-August Shift question paper with solutions — splessons.com · reliable-secondary

← Q248View full paper (480 questions)Q250 →

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