CAOHC test Questions and Answers 100%
Solved
What is the concept of intermittent noise? Noise that comes and goes and is sometimes
cyclical (i.e vehichle warning backup noise or hydraulic lift)
What is an example of an impact noise? Hammer to nail
What is an example of an impulse noise? Gunshot
dB (A) is used for? OSHA, MSHA, FRA, DoD compliance in hearing conservation.
0 dB HL does not mean what? It does not mean that there is no sound at that level
What HL (hearing level) scale is constructed to represent the average softest sound a young adult
can hear at each test frequency. 0 dB HL
0-25dB HL represents what? Normal hearing range
, 90 dB HL represents what? Typically the highest output level on a pure tone air conduction
screening audiometer
What serves as the basis for all other U.S hearing conservation regulations and thus is the basis
for the OHC course instruction. OSHA Amendment (29 CFR 1910.95)
What are indications for manual audiometry? Slow/inappropriate responses, no response,
unilateral hearing loss, and functional hearing loss.
What is the pace at which pure tones should be presented? between 1-2 seconds
State and local requirements must what? Meet or exceed federally mandated HC
requirements. (be equal or more strict)
Background noise can affect what? Low frequencies 500 Hz and below.
What is an indication for a special testing situation? Claustrophobia
Solved
What is the concept of intermittent noise? Noise that comes and goes and is sometimes
cyclical (i.e vehichle warning backup noise or hydraulic lift)
What is an example of an impact noise? Hammer to nail
What is an example of an impulse noise? Gunshot
dB (A) is used for? OSHA, MSHA, FRA, DoD compliance in hearing conservation.
0 dB HL does not mean what? It does not mean that there is no sound at that level
What HL (hearing level) scale is constructed to represent the average softest sound a young adult
can hear at each test frequency. 0 dB HL
0-25dB HL represents what? Normal hearing range
, 90 dB HL represents what? Typically the highest output level on a pure tone air conduction
screening audiometer
What serves as the basis for all other U.S hearing conservation regulations and thus is the basis
for the OHC course instruction. OSHA Amendment (29 CFR 1910.95)
What are indications for manual audiometry? Slow/inappropriate responses, no response,
unilateral hearing loss, and functional hearing loss.
What is the pace at which pure tones should be presented? between 1-2 seconds
State and local requirements must what? Meet or exceed federally mandated HC
requirements. (be equal or more strict)
Background noise can affect what? Low frequencies 500 Hz and below.
What is an indication for a special testing situation? Claustrophobia
