Exam (elaborations)
CAOHC EXAM QUESTIONS AND ANSWERS
- Course
- Institution
CAOHC EXAM QUESTIONS AND ANSWERS
[Show more]
Content preview
CAOHC EXAM QUESTIONS AND ANSWERSThe missions of CAOHC include: - Answers- guiding industry on successful
implementation of hearing conservation programs
NRR calculations are based on an EPA specification that uses a withdrawn ANSI
standard. - Answers- true
Age corrections values are determined by: - Answers- Consulting tables published in
Appendix F of the regulations
Continuous noise is defined as noise lasting longer than: - Answers- 1sec
Administrative controls to limit noise exposure include which of the following? -
Answers- Limiting the time a worker spends at a noise source
What type of hearing loss can be attributed to noise? - Answers- sensorineural
State hearing regulations must meet or exceed federal regulations. - Answers- true
If a daily calibration threshold is off by more than 5 dB, the audiometer must be
acoustically calibrated. - Answers- true
in addition to the OSHA requirements, FRA requires what datum on audiograms? -
Answers- audiometer model
FRA requires worker training within 180 days of enrollment in a hearing conservation
program. - Answers- true
What is the amount of attenuation achieved when earplugs are worn in combination with
earmuffs? - Answers- 5 dB more than the higher attenuation of the two devices
Which of the following is NOT an occupational noise regulatory body? - Answers- CDC
Hertz is a unit of? - Answers- sound frequency
During acoustic calibration no adjustments are made to an audiometer. - Answers- true
functional hearing loss is also known as pseudohypacusis. - Answers- true
Which of the following is NOT a datum OSHA requires on audiograms? - Answers-
workers birthday
OSHA defines a 'persistent STS' as an STS lasting more than:
21 days
30 days
, 45 days
60 days - Answers- none of the above
What is the first thing you should do when fitting earplugs? - Answers- check canal for
any occlusions
Properly fitted earmuffs should cause the wearer's voice to sound deeper or muffled. -
Answers- true
Which of the following statements regarding NRR are true?
Real world attenuation is, on average, about one-third to one-half of the NRR
A higher NRR does not accurately reflect better attenuation in the workplace
Earplug attenuation varies widely among a group of wearers, regardless of NRR -
Answers- all of the above
Which of the following is a method to verify proper plug insertion? - Answers- Acoustic
check observing noise level change when cupping hands over ear
Acoustic neuromas can manifest as assymetric or unilateral loss. - Answers- true
OSHA requires exhaustive calibration of audiometers: - Answers- every 2yrs
Earmuffs should be cleaned with solvents regularly to prevent particulate build-up. -
Answers- false
Which of the following is NOT an element of a Hearing Conservation Program? -
Answers- annual spectrum testing
What decibel level is the action level? - Answers- 85dB 8hr TWA
When performing a test it is best practice to: - Answers- Vary the interval between tone
presentations
FRA requires written notification of a Standard Threshold Shift within how many days? -
Answers- 30
MSHA requires written notification of a Standard Threshold Shift within how many days?
- Answers- 10
When visually inspecting an ear canal, an otoscope should be held like a hammer. -
Answers- false
No follow-up is required for an STS if a physician determines the loss was not caused
on the job. - Answers- true
Audiometric testing is also known as hearing screening. - Answers- false
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller GEEKA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
64438 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now