What will be the sound power level, if a machine generates 20 W power? A. 124 dB B. 133 dB C. 150 dB D. 200 dB Right Answer: B. 133 dB Share : January 26, 2018 Hassan Ali Mechanical Engineering Total 0 Votes: 0 0 Tell us how can we improve this Mcqs? Captcha: + = Verify Human or Spambot ? Related Mcqs Check Below -The vapour absorption refrigeration system is?Energy stored in a body within an elastic limit is called as?Which method is calculated considering geometric average of ordinates?