The equivalent noise level is significant for the following?

GPSC AE Class (1&2) Paper - 2 2017

⭕ (a) Fluctuating noise over different time periods

⭕ (b) Fluctuating noise over constant time periods

⭕ (c) Constant noise over different time period

⭕ (d) Constant noise over same time periods

Explanation: The equivalent noise level (Leq) is a key measure used to evaluate environmental noise, especially when it fluctuates throughout the day. It provides a single value representing the average sound level over a specific time period. This is useful when analyzing:

• Traffic noise
• Construction zones
• Industrial activity

Leq is most significant for: Fluctuating noise over different time periods.

Significance of Equivalent Noise Level (Leq)

The Equivalent Noise Level is a standard parameter used to express varying noise levels as a single equivalent level over time. It's particularly useful in environmental studies and urban planning.

Why It Matters:

• Gives a consistent basis for noise control regulations.
• Used in environmental impact assessments.
• Crucial for designing quiet zones around schools, hospitals, etc.

Conclusion:

The correct answer is (a) Fluctuating noise over different time periods. Leq simplifies complex noise data and supports better planning decisions.