CAOHC Goshorn Industrial Final Latest Update 2024-2025 Questions and 100% Verified Correct Answers Guaranteed A+ At First Attempt
A hearing loss that is relatively flat across frequencies is often characteristic of a
________ hearing loss. - CORRECT ANSWER: Conductive
According to OSHA regulations, what must employers and employees do if the PEL is
exceeded? - CORRECT ANSWER: Employers must use feasible engineering or
administrative controls, and provide hearing protectors to overexposed workers.
Workers must wear hearing protectors
An active hearing protector uses _______ to allow the passage of low and moderate levels of sound into the ear canal while attenuating high sound levels. - CORRECT
ANSWER: Electronic circuitry
Before taking any measurements, what are 3 indications that noise levels in the work
environment exceed 85 dBA? - CORRECT ANSWER: Difficulty communicating at 3 feet
Tinnitus TTS
Both OSHA and MSHA require the integration of all sound levels between _______ dBA
and _______ dBA to comply with the action level. - CORRECT ANSWER: 85
130
Does OSHA legislate or regulate? - CORRECT ANSWER: Regulate
Does OSHA's policy for recording hearing loss on the Form 300 change the existing threshold shift requirements for identifying an STS? Does MSHA's reporting
requirement change its definition of STS? - CORRECT ANSWER: No
No
During the training session, what is the best time to introduce the most important
material? - CORRECT ANSWER: Early in the training session
Earmuffs may cause difficulties in localizing sounds, particularly in the ________ plane.
- CORRECT ANSWER: vertical
For most purposes OSHA requires the _______ (fast or slow) meter response. -
CORRECT ANSWER: Slow
Give 3 examples of outer or middle ear conditions that could cause a conductive hearing loss. - CORRECT ANSWER: Otitis externa, otitis media, impacted cerumen 1 / 2
Give two reasons why institutionalized reward and punishment programs are often unsuccessful. When is an incentive program more likely to succeed? - CORRECT
ANSWER: Lowered worker self esteem; animosity between workers and supervisors
When workers themselves design and carry out the program
Hearing protectors with _______ attenuation can make communication easier than protectors that attenuate heavily in the high frequencies. - CORRECT ANSWER: Flat
How long does OSHA require employers to keep audiograms? - CORRECT ANSWER:
Duration of employment
If a worker is exposed to noise for only two hours in an eight hour work shift, what is the maximum average level the worker may be exposed to during that period and be within
OSHA's PEL? - CORRECT ANSWER: 100 dBA
If the air molecules themselves do not move very far, what is it that does travel,
sometimes long distances? - CORRECT ANSWER: The energy created by the sound
pressure wave.
If the annual audiogram shows an STS with respect to the baseline, according to OSHA, the employee must be notified in writing within _______ days of the
determination. - CORRECT ANSWER: 21
In adjusting for presbycusis that appropriate amount is subtracted from the _______
audiogram. - CORRECT ANSWER: Current
In the inner ear, the snail-shaped end organ for hearing is the _______. - CORRECT
ANSWER: Cochlea
Inexperienced fitters tend to select earplugs that are too tight or loose? - CORRECT
ANSWER: Loose
Inside the middle ear are situated three small bones called the ossicles, whose names are _______, _______, and _______. The function of the ossicular chain is to _______.
- CORRECT ANSWER: Malleus, Incus, Stapes
Conduct sound vibrations from the tympanic membrane to the middle ear.
Large volume earmuffs provide somewhat more attenuation in the _______ frequencies
than the small-volume type. - CORRECT ANSWER: Low and mid
Most occupational noise exposures fluctuate in level during the work shift. The logarithmic average sound exposure level normalized to an 8-hour day is called the
_______ exposure level, abbreviated _______. - CORRECT ANSWER: 8-hour time-
weighted average
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