Allied & ICAR Exam Bank • ALLIED_0926 NAT • 2 Marks

Section 5: Irrigation and Drainage Engineering

Drainage Engineering and Salt Management

Subtopic: Agricultural Drainage Principles

Question Statement:

In the Glover-Dumm transient drainage formula $h_t / h_0 = \frac{8}{\pi^2} e^{-\alpha t}$, the leading coefficient $\frac{8}{\pi^2}$ (taking $\pi^2 = 9.8696$) rounded off to two decimal places is:

Answer Key:

0.81

Step-by-Step Solution & Explanation

$8 / 9.8696 = 0.8106 \approx 0.81$.
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