Water Distribution Systems MCQ with answer and solution

Concept

Gridiron and Dead-End Water Distribution Systems

Formula

N/A

Step-by-step solution

1. Evaluate statement 1: Gridiron networks feature interconnected pipes that provide multiple flow paths, making this statement correct. 2. Evaluate statement 2: Dead-end systems cause water stagnation and disruptions, making them unsuitable for large urban areas compared to gridiron systems, so this statement is incorrect. 3. Select Option A (1 only) as the correct choice based on statement 1 being true.

Explanation

Statement 1 is correct because a gridiron system has interconnected pipes that allow water to flow through multiple alternative routes. Statement 2 is incorrect because dead-end systems have non-connected ends that cause water stagnation and frequent supply disruptions during repairs, making them unsuitable for large urban areas compared to gridiron systems. Therefore, Option A ("1 only") is the correct choice.

Shortcut

To easily remember the difference between Gridiron and Dead-end systems: - Gridiron = Connected & Planned: Think of a city grid with multiple interconnected flow paths (no dead-ends), ideal for large, planned urban areas. - Dead-end = Single-way & Old: Think of a tree branch ending at a wall with a single route, best suited for old or irregular towns.

Common mistake

A common mistake is selecting option C by assuming that dead-end systems are suitable for large urban areas due to their lower cost. In reality, dead-end systems cause water stagnation and disruptions during repairs, making gridiron systems much better suited for planned, large urban networks. Another frequent mistake is selecting option D by failing to recognize that statement 1 correctly describes the layout and advantage of a gridiron network.