DOEHRS EXAM TEST QUESTIONS
WITH ANSWERS 100% PASS
The ossicular chain consists of the malleus, stapes, and ____.—ANSWER--incus
Frequency of sound is measured in ____.—ANSWER--Hz
According to OSHA a Baseline hearing test must be completed within ___ months of
employment.—ANSWER--6
In the United States workplace noise is measured using the ___ weighting scale.—ANSWER--
A
OSHA's Action Level is ___ dBA (TWA).—ANSWER--85
A common non-auditory effect of noise.—ANSWER--high blood pressure
NIOSH Recommends an Exposure Limit of ___ dBA (TWA)—ANSWER--85
Human frequency range of hearing at birth.—ANSWER--20-20000 Hz
Frequencies used to calculate a STS.—ANSWER--2000, 3000, 4000 Hz
Frequencies where most speech sounds are located.—ANSWER--500-4000 Hz
The Noise Reduction Rating (NRR) is calculated using the ___ weighted scale.—ANSWER--C
The Professional Supervisor must be a physician or _____.—ANSWER--Audiologist
, A STS must be reported to the employee in writing within ____ days.—ANSWER--21
Recordable STS must be documented on the injury log within ____ days.—ANSWER--7
The outer ear consists of the _____ and _____.—ANSWER--pinna, ear canal
Problems with the outer or middle ear generally cause _____ hearing loss.—ANSWER--
conductive
Excessive noise exposure generally causes _____ hearing loss—ANSWER--sensorineural
Noise induced hearing loss generally begins around ____ Hz.—ANSWER--4000
When conducting a hearing test, the examiner will start at ____ Hz with a ____ dB intensity
level.—ANSWER--1000, 30
When using double hearing protection DoD and OSHA allow ____ dB to be added to the de-
rated NRR.—ANSWER--5
The purpose of providing annual education is to _____ employees to change behavior.—
ANSWER--motivate
Adding a muffler to an engine is an example of a _____ control.—ANSWER--engineering
Changing work schedules to reduce employee noise exposures is considered an _____
control—ANSWER--administrative
Company A requires OHCs to be CAOHC certified, but the State doesn't. Which requirement
do you follow?—ANSWER--Follow the Company policy.
Hearing loss that recovers after auditory rest is considered a _____ threshold shift.—
ANSWER--temporary
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Brittie Donald
WITH ANSWERS 100% PASS
The ossicular chain consists of the malleus, stapes, and ____.—ANSWER--incus
Frequency of sound is measured in ____.—ANSWER--Hz
According to OSHA a Baseline hearing test must be completed within ___ months of
employment.—ANSWER--6
In the United States workplace noise is measured using the ___ weighting scale.—ANSWER--
A
OSHA's Action Level is ___ dBA (TWA).—ANSWER--85
A common non-auditory effect of noise.—ANSWER--high blood pressure
NIOSH Recommends an Exposure Limit of ___ dBA (TWA)—ANSWER--85
Human frequency range of hearing at birth.—ANSWER--20-20000 Hz
Frequencies used to calculate a STS.—ANSWER--2000, 3000, 4000 Hz
Frequencies where most speech sounds are located.—ANSWER--500-4000 Hz
The Noise Reduction Rating (NRR) is calculated using the ___ weighted scale.—ANSWER--C
The Professional Supervisor must be a physician or _____.—ANSWER--Audiologist
, A STS must be reported to the employee in writing within ____ days.—ANSWER--21
Recordable STS must be documented on the injury log within ____ days.—ANSWER--7
The outer ear consists of the _____ and _____.—ANSWER--pinna, ear canal
Problems with the outer or middle ear generally cause _____ hearing loss.—ANSWER--
conductive
Excessive noise exposure generally causes _____ hearing loss—ANSWER--sensorineural
Noise induced hearing loss generally begins around ____ Hz.—ANSWER--4000
When conducting a hearing test, the examiner will start at ____ Hz with a ____ dB intensity
level.—ANSWER--1000, 30
When using double hearing protection DoD and OSHA allow ____ dB to be added to the de-
rated NRR.—ANSWER--5
The purpose of providing annual education is to _____ employees to change behavior.—
ANSWER--motivate
Adding a muffler to an engine is an example of a _____ control.—ANSWER--engineering
Changing work schedules to reduce employee noise exposures is considered an _____
control—ANSWER--administrative
Company A requires OHCs to be CAOHC certified, but the State doesn't. Which requirement
do you follow?—ANSWER--Follow the Company policy.
Hearing loss that recovers after auditory rest is considered a _____ threshold shift.—
ANSWER--temporary
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Brittie Donald
