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CAOHC TEST PRACTICE #2 QUIZZES & ANS!!!

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CAOHC TEST PRACTICE #2 QUIZZES & ANS!!!

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  • August 25, 2024
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  • 2024/2025
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57 Multiple choice questions

Term 1 of 57
What is the concept of steady state noise?

Providing resources and guidance to facilitate the practice of hearing loss prevention
through standardized training and credentialing

Between 1-2 seconds


Noise that comes and goes and is sometimes cyclical (i.e vehichle warning backup noise or
hydraulic lift)

Long duration (>.5) i.e engine noise

Term 2 of 57
What is the audible frequency range at birth?

20-20,000 Hz

10-100 Hz

30-30,000 Hz

10-10,000 Hz

,Term 3 of 57
What occupational population is most at risk for noise induced hearing loss which highest amount
of claims?

Construction workers are most at risk for nihl due to exposure to heavy machinery.


Healthcare workers have the highest rate of nihl due to constant exposure to alarms and
sirens.


Office workers have the highest incidence of nihl due to prolonged exposure to loud
printers.


Manufacturing accounts for approximately 14% of U.S workforce but accounts for
approximately 80% of incidence of NIHL.

Term 4 of 57
What are the NIOSH recommendations for exchange rates associated with with TWAs?

9 db


85 db

3 dB

5 db

Term 5 of 57
What serves as the basis for all other U.S hearing conservation regulations and thus is the basis for
the OHC course instruction.

5 db

OSHA Amendment (29 CFR 1910.95)

3 db


14 hrs

, Term 6 of 57
90 dB HL represents what?

It denotes the average sound level in a quiet room

Typically the highest output level on a pure tone air conduction screening audiometer

It signifies the intensity of background noise in a crowded place


It represents the lowest possible sound level

Term 7 of 57
A laboratory value assigned to the individual porduct and not a reflection of what kind of
attenuation the worker will ultimately recieve is called?

NRR


PHR

HERTZ

HRR

Term 8 of 57
Peripheral functions are those associated with the?

Inner Ear

Outer Ear

Middle Ear


Cochlea

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