Unit 3a - Hearing Conservation

10 Questions | Total Attempts: 402

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Unit 3a - Hearing Conservation - Quiz

Unit 3a - Hearing Conservation


Questions and Answers
  • 1. 
    Which of the following earplugs are being worn correctly?A.           B.            C.
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      All are correct

  • 2. 
    You have been using an impact wrench for 6 straight hours with no hearing protection. The impact wrench creates a noise level of 108dB. Have you been overexposed?
    • A. 

      Yes

    • B. 

      No

  • 3. 
    You are working in a noise level of 92dB, but ARE wearing ear plugs with a Noise Reduction Rating (NRR) of 23dB. Can you work for 8 hours in this environment?
    • A. 

      Yes

    • B. 

      No

  • 4. 
    Noise Induced Hearing Loss (NIHL) can be permanent.
    • A. 

      TRUE

    • B. 

      FALSE

  • 5. 
    With no hearing protection, how many consecutive hours can you work in a noise level of 90dB?
    • A. 

      8

    • B. 

      6

    • C. 

      4

    • D. 

      3

  • 6. 
    How can you tell if a noise level is too great?
    • A. 

      The noise hurts your ears

    • B. 

      You must shout over a short distance to be heard

    • C. 

      You have difficulting hearing a few hours after exposure to the noise

    • D. 

      All of the above

  • 7. 
    The intesity of noise is measured in:
    • A. 

      Amplitude

    • B. 

      Frequency

    • C. 

      Decibels

    • D. 

      Wavelength

  • 8. 
    The Threshold (or Upper Limit) for what is considered a hazardous noise level is:
    • A. 

      80dB

    • B. 

      85dB

    • C. 

      90dB

    • D. 

      95dB

  • 9. 
    You are mowing your yard and use your IPod/headphones to drown out the noise. You have ______ your risk of Noise Induced Hearing Loss (NIHL).
    • A. 

      Increased

    • B. 

      Decreased

    • C. 

      Had no effect

    • D. 

      Cancelled out

  • 10. 
    WITHOUT hearing protection, how long can a concrete chipping operation rated at 97 decibels continue before you are overexposed?
    • A. 

      2 hours

    • B. 

      3 hours

    • C. 

      4 hours

    • D. 

      5 hours

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