Noise (CBSE-NET (UGC) Environmental Science (Paper-II & Paper-III)): Questions 1 - 2 of 2

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Question number: 1

» Noise » Measurement of Noise and Indices

Appeared in Year: 2015

MCQ▾

Question

The Noise Index Leq for a specific duration is a measure of: - (June)

Choices

Choice (4) Response
a.

Acoustic energy content

b.

Sum of instantaneous sound pressure levels

c.

Fluctuations in noise levels

d.

Average noise amplitude

Question number: 2

» Noise » Noise Exposure Levels and Standards

Appeared in Year: 2011

MCQ▾

Question

The sound power from a voice shouting is 0.001 Watt. The sound level in dB is – (December)

Choices

Choice (4) Response
a.

120 dB

b.

90 dB

c.

30 dB

d.

60 dB

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