Deck 18: Noise and Vibration Hazards

Question 1

Sound and vibration are very similar. Which of the following statements are true?

A) Sound relates to a sensation
B) Vibration is inaudible
C) Vibration is perceived through the sense of touch
D) All of the above

Answer 1

D

Question 2

Conducting noise surveys involves measuring noise levels at all locations in the workplace.

Answer 2

False

Question 3

The unit of measurement for sound is the decibel, or one-tenth of a bel.

Answer 3

True

Question 4

Noise control strategies include which of the following?

A) Noise can be reduced at the receiver by enclosing the worker
B) Noise can be reduced along its path by moving the source farther away
C) Noise can be reduced at its source by enclosing the source
D) All of the above

Question 5

Fit testing is not an important prerequisite for effective noise protection.

Question 6

Sound is any change in pressure that can be detected by the ear.

Question 7

Noise is distinguished from sound by which of the following factors?

A) Intensity of noise
B) Unwanted sound
C) Type of noise
D) Duration of exposure

Question 8

What level of DBA is considered the maximum limit of continuous exposure over eight hour days without protection?

A) 150
B) 3
C) 90
D) 20

Question 9

Impulsive noise reduction involves reducing peak impulse transmission based on the use of PESDs.

Question 10

Trying out HPDs to determine how they fit with an individual's anatomical features is known as what?

A) Trial PPE run
B) Fit testing
C) PPE testing
D) PPE run through

Question 11

Medical professionals have not yet established a procedure for determining if there is a causal relationship between workplace noise and hearing loss.

Question 12

The EPA is replacing its method of using a single number to rate HPDs with a sliding scale showing the low and high range of estimated protection provided.

Question 13

Federal regulations require that employees be protected from excessive noise in the workplace.

Question 14

The fundamental hazard associated with excessive noise is hearing loss.

Question 15

Noise can be eliminated at its source by enclosing the source.

Question 16

Which of the following is the name given to reduction of sound transmission using materials and/or structural elements?

A) Active noise reduction
B) Parallel noise reduction
C) Structural noise reduction
D) Passive noise reduction

Question 17

The threshold of hearing is the maximum level of sound that can be perceived without experiencing pain.

Question 18

With PPE fit is not important in most cases.

Question 19

Identifying and assessing hazardous noise conditions in the workplace involve which of the following?

A) Conducting periodic noise surveys
B) Conducting periodic audiometric tests
C) Record keeping and follow up action
D) All of the above

Question 20

To decrease the risk of hearing loss, exposure to noise should be limited to a maximum 8-hour, time-weighted average of 90 DBA.