Question Bank • QB_IDE_009 NAT • 1 Mark

Section 5: Irrigation and Drainage Engineering

Wells and Pumps

Subtopic: Types of wells

Question Statement:

An irrigation tubewell operating at a constant discharge of $1800\text{ L/min}$ causes a stabilized steady drawdown of $3.0\text{ m}$ at the well screen. The specific capacity of the tubewell in $\text{L/(min}\cdot\text{m)}$ is ________ (answer in integer).

Answer Key:

600

Step-by-Step Solution & Explanation

Specific capacity of a well is defined as the discharge per unit steady drawdown: $\text{Specific Capacity} = \frac{Q}{s} = \frac{1800\text{ L/min}}{3.0\text{ m}} = 600\text{ L/(min}\cdot\text{m)}$
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