Allied & ICAR Exam Bank • ALLIED_1243 NAT • 2 Marks

Section 5: Irrigation and Drainage Engineering

Micro-Irrigation Systems

Subtopic: Emitter Coefficient of Variation

Question Statement:

In a manufacturing test of 50 new drip emitters, the standard deviation of emitter discharge is $s = 0.16\text{ L/h}$ and the mean discharge is $\bar{q} = 4.0\text{ L/h}$. The manufacturing coefficient of variation ($C_v = s / \bar{q}$) is:

Answer Key:

0.04

Step-by-Step Solution & Explanation

$C_v = \frac{0.16}{4.0} = 0.04$. (According to ASAE standards, $C_v < 0.05$ is categorized as excellent).
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