CAOHC QUESTIONS WITH CORRECT ANSWERS

CAOHC Practice Exam What type of tone is employed in audiometry? A. Complex B. Pure C. Basal D. Harmonic E. None of the above - Answer- B. Pure What factors should be considered when selecting hearing protectors A. Comfort B. Ease of use C. Attenuation amount D. Communication requirements E. All of the above - Answer- E. All of the above When determining a threshold, a positive response should be followed by lowering the hearing level 5 dB. A. True B. False - Answer- B. False The method for approximating real world attenuation from an NRR is called "delisting". A. True B. False - Answer- B. False What factors influence the effectiveness of hearing protectors? A. Temperature B. Radio frequencies C. Particles D. Solvents E. All of the above - Answer- E. All of the above Which of the following is a method to verify proper plug insertion? A. Acoustic check observing noise level change when cupping hands over ear B. Observing attenuation when tapping gently on the mastoid bone C. Check the packaging NRR and verify is adequate for sound levels encountered D. All of the above E. None of the above - Answer- A. Acoustic check observing noise level change when cupping hands over ear The commonly considered range of normal hearing is from: A. 0-25 dB B. 0-35 dB C. 0-45 dB D. 25-35 dB