Presbycusis is:
A) Hearing loss due to long term exposure to noise above 90 dBA
B) Normal deterioration in hearing due to ageing
C) Hearing loss due to ear disease
D) A church presbytery committee
E) Temporary shift in hearing ability from exposure to high industrial noise levels above 95 dBC
Correct Answer:
Verified
Q2: Hearing range is:
A)20 Hz to 20 kHz
B)2
Q3: What does the building services engineer do
Q4: Sound travels through air in the form
Q5: Reference point for sound level measurement is:
A)Lowest
Q6: A gas turbine rotates at 60000 RPM
Q7: Which item of plant does not normally
Q8: Which is the smallest increment of sound
Q9: Explain the meaning of SWL:
A)Sound pressure level,
Q10: A noisy machine on a plant room
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