Reference point for sound level measurement is:
A) Lowest audible level by a domestic animal
B) Absolute zero sound
C) Smallest sound detectable by human ear
D) Zero atmospheric pressure as found in space
E) Inaudible level created in a test laboratory
Correct Answer:
Verified
Q1: Presbycusis is:
A)Hearing loss due to long term
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
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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