Hearing conservation certification
A calibration performed by specialists with specialized equipment every 2 years, or when a
repair is done is called a(n) ____________ calibration.
a. acoustical
b. exhaustive
c. biological
d. comprehensive - ANS-B
\. Advantages of a microprocessor audiometer are less examiner errors, requires little skill,
and ___________________.
a. best for difficult-to-test patients
b. can test multiple patients
c. greater examiner control
d. less data to enter - ANS-B
\. An example of a(an)________________ noise would be gunfire; an example of a(an)
_____________ noise would be a staple gun.
a. impulse; intermittent
b. impact; impulse
c. intermittent; impulse
d. impulse; impact - ANS-B
\. An OSHA-recordable STS must be determined to be work related, have an average 10 dB
shift at 2000, 3000, and 4000 Hz in either or both ears, and also a
___________________________.
a. 25 dB or worse average hearing level on current audio at 2000, 3000 and 4000 Hz in
either ear.
b. 25 dB or worse average hearing level on current audio at 2000, 3000 and 4000 Hz in the
same ear.
c. 25 dB or worse hearing level on current audio at any frequency from 1000- 4000 Hz in
either or both ears
d. 25 dB or worse hearing level on current audio at any frequency from 2000- 4000 Hz in the
same ear - ANS-B
\.The relationship between _______ and ________ is what determines the risk of
noise-induced hearing loss:
a. intensity; frequency
b. duration; intensity
c. duration; frequency
d. intensity; weighting - ANS-B
\(9) (OSHA) Permissible Exposure Limit (PEL) -is how many dBa? Impulse noise limit?
WHen is hearing protection mandatory? - ANS-90 DBA
140dBP
Hearing protection is MANDATORY when 8-hour TWA > 90 dBA TWA
\7. Typical characteristics of a noise-induced hearing loss include a notch at 4000 Hz,
variable susceptibility among individuals, and
_________________________.
a. bilateral and symmetrical
,b. bilateral and asymmetrical
c. Unilateral
d. Loss not greater than 50 dBHL - ANS-A
\A _____________ hearing loss should be referred for further audiometric workup to rule out
medical causes.
a. unilateral
b. precipitously sloping
c. downward sloping
d. bilateral - ANS-A
\A biological calibration must be within _______ of an established baseline.
a. +/- 5dB
b. +/- 10dB
c. +/- 15dB
d. +/- 20dB - ANS-A
\A COHC is NOT able to train other OHCs to do manual testing, to be a Professional
Supervisor, or ____________________.
a. select, fit, and instruct on hearing protection devices
b. perform automated air conduction pure tone testing
c. diagnose hearing problems or interpret audiograms
d. counsel individuals about their hearing test results - ANS-C
\A daily check of equipment which involves both a visual and listening check is a:
a. Biological check
b. Electroacoustic calibration
c. Functional check
d. Exhaustive calibration - ANS-C
\A decibel (dB) is the unit of measurement for:
a. Frequency
b. Intensity
c. Duration
d. Weighting - ANS-B
\A hearing loss caused by workplace noise exposure will most typically show an audiogram
with this configuration:
a. Unilateral audiogram
b. Symmetrical notched audiogram
c. Asymmetrical notched audiogram
d. Downward sloping audiogram - ANS-B
\A mixed loss is:
a. A loss which occurs in both the middle ear and outer ear in the same ear
b. A loss which occurs in both the outer and inner ear in either ear
c. Any combination of a conductive or sensorineural loss in either ear
d. Any combination of a conductive or sensorineural loss in the same ear - ANS-D
\A professional supervisor's role will typically include oversight of the audiometric testing
program, review of problem audiograms, and _________________.
a. annual training of employees
b. noise control implementation
c. noise hazard assessment
d. determining work-relatedness of hearing loss - ANS-D
\A pulsed tone should be presented for:
, a. 5-10 seconds, 3-5 pulses
b. 1-2 seconds, 2-3 pulses
c. 5 seconds, 2-3 pulses
d. 1-2 seconds, 1-2 pulses - ANS-B
\A self-check of earplugs should always include a visual check, and at least one additional
self-check depending on the earplug type, which might include a tug test on earplugs with a
stem, and a listening check such as:
a. cupping hand over one ear with an earplug inserted to see if noise in room remains
constant
b. counting out loud with both earplugs inserted while listening for occlusion effect which
should include lower pitch voice that is heard in the middle
c. counting out loud with earplug in one ear listening for lower pitch voice that is heard in the
middle
d. counting out loud with earplug in one ear listening for lower pitch voice that is heard in ear
without earplug inserted - ANS-B
\A subjective rule for determining if your environment is potentially hazardous is the:
a. Inverse square rule
b. 3-foot rule
c. 10-foot rule
d. Acoustic doubling rule - ANS-B
\a technician who performs audiometric tests.............*must be responsible to an audiologist,
otolaryngologist or physician*...(who) shall review problem audiograms....determine whether
there is a need for further evaluation......revise audiometric baselines ......(and) supervise
and *be responsible for the training and competence of the OHC* - ANS-
\A test of validity is to retest ________ Hz in _________________.
a. 500 Hz; better ear
b. 1000 Hz; better ear
c. 500 Hz; both ears
d. 1000 Hz; both ears - ANS-B
\A type of sensorineural hearing loss which may dictate an emergency situation and need for
referral would be:
a. An ototoxicity
b. A sudden idiopathic hearing loss
c. A cholesteatoma
d. Presbycusis - ANS-B
\A(An) _____________ noise source lasts more than 1 second in duration.
a. steady state (continuous)
b. intermittent
c. impact
d. impulse - ANS-A
\A(n) __________ calibration is done annually; an ___________involves some adjustments
and should be done at least every 2 years:
a. biological; electroacoustic
b. exhaustive; electroacoustic
c. electroacoustic; exhaustive
d. functional; exhaustive - ANS-C
\A(n) __________________________ calibration should be performed immediately after
annual calibration and then daily when in use:
A calibration performed by specialists with specialized equipment every 2 years, or when a
repair is done is called a(n) ____________ calibration.
a. acoustical
b. exhaustive
c. biological
d. comprehensive - ANS-B
\. Advantages of a microprocessor audiometer are less examiner errors, requires little skill,
and ___________________.
a. best for difficult-to-test patients
b. can test multiple patients
c. greater examiner control
d. less data to enter - ANS-B
\. An example of a(an)________________ noise would be gunfire; an example of a(an)
_____________ noise would be a staple gun.
a. impulse; intermittent
b. impact; impulse
c. intermittent; impulse
d. impulse; impact - ANS-B
\. An OSHA-recordable STS must be determined to be work related, have an average 10 dB
shift at 2000, 3000, and 4000 Hz in either or both ears, and also a
___________________________.
a. 25 dB or worse average hearing level on current audio at 2000, 3000 and 4000 Hz in
either ear.
b. 25 dB or worse average hearing level on current audio at 2000, 3000 and 4000 Hz in the
same ear.
c. 25 dB or worse hearing level on current audio at any frequency from 1000- 4000 Hz in
either or both ears
d. 25 dB or worse hearing level on current audio at any frequency from 2000- 4000 Hz in the
same ear - ANS-B
\.The relationship between _______ and ________ is what determines the risk of
noise-induced hearing loss:
a. intensity; frequency
b. duration; intensity
c. duration; frequency
d. intensity; weighting - ANS-B
\(9) (OSHA) Permissible Exposure Limit (PEL) -is how many dBa? Impulse noise limit?
WHen is hearing protection mandatory? - ANS-90 DBA
140dBP
Hearing protection is MANDATORY when 8-hour TWA > 90 dBA TWA
\7. Typical characteristics of a noise-induced hearing loss include a notch at 4000 Hz,
variable susceptibility among individuals, and
_________________________.
a. bilateral and symmetrical
,b. bilateral and asymmetrical
c. Unilateral
d. Loss not greater than 50 dBHL - ANS-A
\A _____________ hearing loss should be referred for further audiometric workup to rule out
medical causes.
a. unilateral
b. precipitously sloping
c. downward sloping
d. bilateral - ANS-A
\A biological calibration must be within _______ of an established baseline.
a. +/- 5dB
b. +/- 10dB
c. +/- 15dB
d. +/- 20dB - ANS-A
\A COHC is NOT able to train other OHCs to do manual testing, to be a Professional
Supervisor, or ____________________.
a. select, fit, and instruct on hearing protection devices
b. perform automated air conduction pure tone testing
c. diagnose hearing problems or interpret audiograms
d. counsel individuals about their hearing test results - ANS-C
\A daily check of equipment which involves both a visual and listening check is a:
a. Biological check
b. Electroacoustic calibration
c. Functional check
d. Exhaustive calibration - ANS-C
\A decibel (dB) is the unit of measurement for:
a. Frequency
b. Intensity
c. Duration
d. Weighting - ANS-B
\A hearing loss caused by workplace noise exposure will most typically show an audiogram
with this configuration:
a. Unilateral audiogram
b. Symmetrical notched audiogram
c. Asymmetrical notched audiogram
d. Downward sloping audiogram - ANS-B
\A mixed loss is:
a. A loss which occurs in both the middle ear and outer ear in the same ear
b. A loss which occurs in both the outer and inner ear in either ear
c. Any combination of a conductive or sensorineural loss in either ear
d. Any combination of a conductive or sensorineural loss in the same ear - ANS-D
\A professional supervisor's role will typically include oversight of the audiometric testing
program, review of problem audiograms, and _________________.
a. annual training of employees
b. noise control implementation
c. noise hazard assessment
d. determining work-relatedness of hearing loss - ANS-D
\A pulsed tone should be presented for:
, a. 5-10 seconds, 3-5 pulses
b. 1-2 seconds, 2-3 pulses
c. 5 seconds, 2-3 pulses
d. 1-2 seconds, 1-2 pulses - ANS-B
\A self-check of earplugs should always include a visual check, and at least one additional
self-check depending on the earplug type, which might include a tug test on earplugs with a
stem, and a listening check such as:
a. cupping hand over one ear with an earplug inserted to see if noise in room remains
constant
b. counting out loud with both earplugs inserted while listening for occlusion effect which
should include lower pitch voice that is heard in the middle
c. counting out loud with earplug in one ear listening for lower pitch voice that is heard in the
middle
d. counting out loud with earplug in one ear listening for lower pitch voice that is heard in ear
without earplug inserted - ANS-B
\A subjective rule for determining if your environment is potentially hazardous is the:
a. Inverse square rule
b. 3-foot rule
c. 10-foot rule
d. Acoustic doubling rule - ANS-B
\a technician who performs audiometric tests.............*must be responsible to an audiologist,
otolaryngologist or physician*...(who) shall review problem audiograms....determine whether
there is a need for further evaluation......revise audiometric baselines ......(and) supervise
and *be responsible for the training and competence of the OHC* - ANS-
\A test of validity is to retest ________ Hz in _________________.
a. 500 Hz; better ear
b. 1000 Hz; better ear
c. 500 Hz; both ears
d. 1000 Hz; both ears - ANS-B
\A type of sensorineural hearing loss which may dictate an emergency situation and need for
referral would be:
a. An ototoxicity
b. A sudden idiopathic hearing loss
c. A cholesteatoma
d. Presbycusis - ANS-B
\A(An) _____________ noise source lasts more than 1 second in duration.
a. steady state (continuous)
b. intermittent
c. impact
d. impulse - ANS-A
\A(n) __________ calibration is done annually; an ___________involves some adjustments
and should be done at least every 2 years:
a. biological; electroacoustic
b. exhaustive; electroacoustic
c. electroacoustic; exhaustive
d. functional; exhaustive - ANS-C
\A(n) __________________________ calibration should be performed immediately after
annual calibration and then daily when in use:
