CAOHC Exam Prep UPDATED ACTUAL Questions and CORRECT Answers
hertz is a unit of: sound frequency
decibel is a unit of: sound intensity
the frequency of sound is perceived as: pitch
a. pull the top of the ear to align the ear canal
b. roll the earplug down into a tight, crease-free cylinder
what is the first thing you should do when fitting earplugs?
c. CHECK THE EAR CANAL FOR ANY OCCLUSIONS
d. insert the earplug deep into the ear canal
hearing tests do not have to be conducted in a sound
booth as long as maximum allowable ambient noise levels true
aren't exceeded:
what type of hearing loss can be attributed to noise? sensorineural
what is the frequency range of speech sounds? 250-4000 Hz
OSHA requires exhaustive calibration if there is a deviation
true
of greater than or equal to 15 dB:
the range of normal hearing is: 0-25 dB
a. does not end
b. FLUCTUATES IN SOUND LEVEL WITH PERIODIC INTER-
RUPTIONS OF RELATIVE QUIET
intermittent noise is noise that: c. rises continuously
d. has been abated through the implementation of engi-
neering controls
e. none of the above
functional hearing loss is also known as pseudohypacusis: true
conventional earplugs typically reduce high frequency
true
noise more than low-frequency noise:
OSHA allows retests to be substituted for original tests if
30 days
done within how many days of the original test?
,administrative controls to limit noise exposure to include: limiting the time a worker spends at a noise source
when a worker's exposure level reaches the "action level",
include the worker in a hearing conservation program
the employer must:
a: effects of noise on hearing
b: purpose of hearing protectors
what components does OSHA require for worker training? c: purpose of hearing testing
d: instructions on selecting and fitting protectors
e. ALL OF THE ABOVE
what is the document that OSHA requires to report hear-
form 300
ing loss incidents?
guiding industry on successful implementation of hearing
the missions of CAOHC include:
conservation programs
NIHL typically affects: higher frequencies first
what is the term for temporary hearing loss after noise
temporary threshold shift
exposure?
a. FRA
b: MSHA
which of the following is NOT an occupational noise reg-
C: CDC
ulatory body?
d: OSHA
e: NIOSH
in order to apply age correction to STS calculations, the
true
worker's age and sex are required:
a. comfort
b. CARE
which of the following is NOT one of NIOSH's "5 Cs of
c. convenience
HPDs" to describe the barriers of protective devices:
d. communication
e. cost
, a. BEFORE THE WORKER'S SHIFT
when should a baseline test be performed (ideally)? b. in the middle of the worker's shift
c. after the worker's shift
the middle ear is the primary site of damage due to
false
hearing loss:
noise dosimeters are the best tool to measure noise expo-
true
sure for workers whose exposures vary during their shift:
a. worker gender
b. AUDIOMETER MODEL
in addition to the OSHA requirements, the FRA requires
c. examiner CAOHC number
what datum on audiograms?
d. HCP professional supervisor name
e. audiometric room certification date
OHC's should suggest likely pathologies for a hearing loss
false
only if asked by subjects:
a. motorcycles
b. carpentry
which of the following is NOT a common non-occupational
c. guns
source of harmful noise?
d. lawn equipment
e. NONE OF THE ABOVE
a. doesn't work well with hard hats
b. MUST BE INSERTED WITH CLEAN HANDS
which of the following is a disadvantage of foam plugs? c. doesn't fit larger ear canals
d. must be washed frequency
e. all of the above
swimmer's ear is an example of mixed hearing loss: false
a. temperature
what factors influence the effectiveness of hearing protec-
b. radio frequencies
tors?
c. particles
hertz is a unit of: sound frequency
decibel is a unit of: sound intensity
the frequency of sound is perceived as: pitch
a. pull the top of the ear to align the ear canal
b. roll the earplug down into a tight, crease-free cylinder
what is the first thing you should do when fitting earplugs?
c. CHECK THE EAR CANAL FOR ANY OCCLUSIONS
d. insert the earplug deep into the ear canal
hearing tests do not have to be conducted in a sound
booth as long as maximum allowable ambient noise levels true
aren't exceeded:
what type of hearing loss can be attributed to noise? sensorineural
what is the frequency range of speech sounds? 250-4000 Hz
OSHA requires exhaustive calibration if there is a deviation
true
of greater than or equal to 15 dB:
the range of normal hearing is: 0-25 dB
a. does not end
b. FLUCTUATES IN SOUND LEVEL WITH PERIODIC INTER-
RUPTIONS OF RELATIVE QUIET
intermittent noise is noise that: c. rises continuously
d. has been abated through the implementation of engi-
neering controls
e. none of the above
functional hearing loss is also known as pseudohypacusis: true
conventional earplugs typically reduce high frequency
true
noise more than low-frequency noise:
OSHA allows retests to be substituted for original tests if
30 days
done within how many days of the original test?
,administrative controls to limit noise exposure to include: limiting the time a worker spends at a noise source
when a worker's exposure level reaches the "action level",
include the worker in a hearing conservation program
the employer must:
a: effects of noise on hearing
b: purpose of hearing protectors
what components does OSHA require for worker training? c: purpose of hearing testing
d: instructions on selecting and fitting protectors
e. ALL OF THE ABOVE
what is the document that OSHA requires to report hear-
form 300
ing loss incidents?
guiding industry on successful implementation of hearing
the missions of CAOHC include:
conservation programs
NIHL typically affects: higher frequencies first
what is the term for temporary hearing loss after noise
temporary threshold shift
exposure?
a. FRA
b: MSHA
which of the following is NOT an occupational noise reg-
C: CDC
ulatory body?
d: OSHA
e: NIOSH
in order to apply age correction to STS calculations, the
true
worker's age and sex are required:
a. comfort
b. CARE
which of the following is NOT one of NIOSH's "5 Cs of
c. convenience
HPDs" to describe the barriers of protective devices:
d. communication
e. cost
, a. BEFORE THE WORKER'S SHIFT
when should a baseline test be performed (ideally)? b. in the middle of the worker's shift
c. after the worker's shift
the middle ear is the primary site of damage due to
false
hearing loss:
noise dosimeters are the best tool to measure noise expo-
true
sure for workers whose exposures vary during their shift:
a. worker gender
b. AUDIOMETER MODEL
in addition to the OSHA requirements, the FRA requires
c. examiner CAOHC number
what datum on audiograms?
d. HCP professional supervisor name
e. audiometric room certification date
OHC's should suggest likely pathologies for a hearing loss
false
only if asked by subjects:
a. motorcycles
b. carpentry
which of the following is NOT a common non-occupational
c. guns
source of harmful noise?
d. lawn equipment
e. NONE OF THE ABOVE
a. doesn't work well with hard hats
b. MUST BE INSERTED WITH CLEAN HANDS
which of the following is a disadvantage of foam plugs? c. doesn't fit larger ear canals
d. must be washed frequency
e. all of the above
swimmer's ear is an example of mixed hearing loss: false
a. temperature
what factors influence the effectiveness of hearing protec-
b. radio frequencies
tors?
c. particles
