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CAOHC Study Set Questions & Answers(RATED A+)

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Manufacturing - ANSWER Which occupational sector accounts for the highest incidence of noise-induced hearing loss? Tinnitus - ANSWER A buzzing or ringing in the ears is known as Three - ANSWER Noise exposures are considered likely to be harmful if shouting is required in order to communicate ...

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manufacturing answer which occupational sector a
tinnitus answer a buzzing or ringing in the ears
three answer noise exposures are considered like

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CAOHC Study Set Questions &
Answers(RATED A+)
Manufacturing - ANSWER Which occupational sector accounts for the highest incidence
of noise-induced hearing loss?

Tinnitus - ANSWER A buzzing or ringing in the ears is known as

Three - ANSWER Noise exposures are considered likely to be harmful if shouting is
required in order to communicate to a person __________ feet away

Painless, Progressive, Permanent, Preventable - ANSWER What are the four P's of
Noise-Induced Hearing Loss

140 dBP - ANSWER Impulse noise becomes hazardous at

Frequency - ANSWER Hertz (Hz) is used to measure

Pitch - ANSWER The frequency of sound is perceived as

Decibels (dB) - ANSWER The amplitude/intensity of a sound is measured in

Exchange rate - ANSWER What reflects the relationship between the allowable
exposure time and the noise intensity level?

90/85 - ANSWER OSHA prescribes a permissible exposure limit (PEL) of __________
dBA TWA and the DoD prescribes a PEL of __________

A - ANSWER Workplace hazard surveys are completed using the __________
weighting scale

85/85 - ANSWER OSHA prescribes an action level of __________ dBA TWA and DoD
prescribes an action level of __________

engineering - ANSWER Adding a muffler to noisy equipment to reduce noise exposure
is an example of what kind of control?

250-4000 Hz - ANSWER Human speech is located in this range of hearing

malleus, incus, stapes - ANSWER What are the three bones of the middle ear?

8 - ANSWER Time Weighted Average is based on an __________ hour exposure

, use and use correctly - ANSWER The best hearing protection is the one that you
__________

Presbycusis - ANSWER Aging related hearing loss is known as

85 dBA TWA - ANSWER Single hearing protection is required when the steady state
noise level exceeds

140 dBP - ANSWER Single hearing protection is required when the impulse noise
exceeds

ototoxic exposure - ANSWER Causes of hearing loss include disease, injury, age,
genetics, and

loneliness, fatigue, high blood pressure, increased stress hormone levels, raised heart
rate, disruption of healthy sleep patterns - ANSWER What are three non-auditory
effects of hearing loss?

tinnitus, hyperacusis, difficulty understanding speech - ANSWER Auditory effects of
hearing loss include

1-2 - ANSWER All audiometer tones should be presented for ____________ seconds

500Hz, 1000Hz, 2000Hz, 3000 Hz, 4000Hz, 6000Hz - ANSWER The test frequencies
required by ANSI S3.21 are

DD 2215 - ANSWER Which form is used to document the baseline audiogram?

annually - ANSWER Electroacoustic calibrations are required

name - ANSWER Noise-exposed personnel must be identified by __________

21 - ANSWER A worker with an OSHA-recordable hearing loss must be notifed in
writing within __________ days

Significant threshold shift (standard threshold shift for OSHA) - ANSWER A change in
hearing threshold (+ or -), relative to the baseline audiogram, of an average of 10 dB or
more, at 2000, 3000, and 4000 Hz, in one or both ears is called?

25 - ANSWER For an STS to be considered recordable, it must be work-related and
result in average hearing thresholds greater than or equal to __________ dB average at
2000, 3000, and 4000 Hz in the effected ear

diagnose - ANSWER A Certified Occupation Hearing Conservationist (COHC) cannot
__________ patients

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