CAOHC Practice Exam questions and answers Latest Updated

CAOHC Practice Exam questions and answers Latest Updated What type of tone is employed in audiometry? A. Complex B. Pure C. Basal D. Harmonic E. None of the above - CORRECT 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 - CORRECT 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 - CORRECT ANSWER-B. False The method for approximating real world attenuation from an NRR is called "delisting". A. True B. False - CORRECT 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 - CORRECT 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 - CORRECT 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 E. 25-45 dB - CORRECT ANSWER-A. 0-25 dB What is the term for temporary hearing loss after noise exposure? A. Temporary Threshold Shift B. Transient Inurement C. Ossicle Dampening Phenomenon D. Noise-Induced Hearing Lesion E. Standard Threshold Shift - CORRECT ANSWER-A. Temporary Threshold Shift 'Hearing levels' used by audiometers are also known as 'sound pressure levels'. A. True B. False - CORRECT ANSWER-B. Fal