Exam (elaborations) Hearing conservation certification (HCC)

6/27/25, 12:36 PM Hearing conservation certification




Hearing conservation certification (HCC) NEWEST EXAM
2025-2026 \COMPLETE VERSION WITH UPDATED QUESTIONS
AND ACCURATE DETAILED ANSWERS \VERIFIED 100%
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Frequency is perceived as C
pitch, is measured in
Hertz (Hz), and
________________________________.
a. is a significant

factor for risk of
developing hearing
loss
b. low frequencies are easily
stopped by a barrier
c. more cycles per second
indicate a high frequency
sound
d. more cycles per second
indicate a low frequency
sound
A decibel (dB) is the unit of B
measurement for:
a. Frequency

b. Intensity

c. Duration

d. Weighting

Range of human hearing at C
birth:
a. 20 Hz to 8,000 Hz

b. 250 Hz to 10,000 Hz

c. 20 Hz to 20,000 Hz

d. 500 Hz to 8,000 Hz




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,6/27/25, 12:36 PM Hearing conservation certification


Adding together two identical B
noise
sources of 100 dBA each will
result in a total of:
a. 200 dBA

b. 103 dBA

c. 105 dBA

d. 106 dBA

The range of intensity (from C
just audible to discomfort)
for human hearing is:
a. 0 dB - 100 dB

b. 0 dB - 85 dB

c. 0 dB - 140 dB

d. 0 dB - 90 dB

.The relationship between B
_______ and ________ is what
determines the risk of
noise-
induced hearing loss:
a. intensity; frequency

b. duration; intensity

c. duration; frequency

d. intensity; weighting

The ___ weighting network A
resembles how the human
ear responds to sound and
is used in HCPs to
determine risk:
a. A

b. B

c. C

d. Z

Steady-state or continuous C
noise has a duration of:
a. At least 5 seconds

b. .5 second or longer

c. 1 second or longer
d. At least 10 seconds



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,6/27/25, 12:36 PM Hearing conservation certification


Time-weighted average is B
based on:
a. No defined period of time

b. 8 hours

c. 10 hours

d. 40 hours

Per OSHA, the Action Level is C
___________________ dBA
TWA
and the Permissible Exposure
Limit is ____ dBA TWA.
a. 90; 85

b. 85; 85

c. 85; 90

90; 90
d.

At the Action Level the B
requirements for enrolled
employees are annual
hearing testing and
education, hearing
protection made
available, and _______ _.
a. engineering

controls must be
considered
b. hearing protection must
be worn by those who
have incurred an STS
c. fit testing of hearing
protection must be done
d. dosimetry must be
conducted on every
enrolled employee
The ___is team member most C
likely to
conduct noise measurements.
a. safety manager

b. professional supervisor

c. industrial hygienist

d. COHC

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, 6/27/25, 12:36 PM Hearing conservation certification

Instrument that captures B
noise levels at a point in
time:
a. Dosimeter

b. Sound level meter

c. Audiometer

d. Oscilloscope

When employees are mobile D
and/or have varying
exposures over a workday,
the
recommended instrument for
noise measurement is:
a. Sound level meter

b. Audiometer

c. Oscilloscope

d. Dosimeter

A subjective rule for B
determining if your
environment is potentially
hazardous is the:
a. Inverse square rule

b. 3-foot rule

c. 10-foot rule

d. Acoustic doubling rule

OSHA recommends a Type C
___ microphone for noise
measurement instruments.
a. A

b. 1

c. 2

d. Z

The ___ is professional most C
qualified
to recommend engineering
controls.
a. safety manager

b. industrial hygienist

c. acoustical/noise control
engineer


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