WBPSC AE (MCD) 1998
⭕ A. dead end, trees, grid iron and reticulation
⭕ B. dead end, trees, grid iron and circular
⭕ C. Tree, Grid iron, Ring and Radial
⭕ D. tree, reticulation, circular and ring
📚 Explanation:
The four major water supply distribution systems are Tree, Grid iron, Ring, and Radial.
🔹 Tree system: Main lines branch into smaller lines like a tree.
🔹 Grid iron: Network of intersecting mains for uniform supply.
🔹 Ring: Looped mains ensure circulation and reduce dead ends.
🔹 Radial: Distribution radiates from a central reservoir.
Why not other options?
Other listed combinations are incomplete or use outdated terms.
The four major water supply distribution systems are Tree, Grid iron, Ring, and Radial.
🔹 Tree system: Main lines branch into smaller lines like a tree.
🔹 Grid iron: Network of intersecting mains for uniform supply.
🔹 Ring: Looped mains ensure circulation and reduce dead ends.
🔹 Radial: Distribution radiates from a central reservoir.
Why not other options?
Other listed combinations are incomplete or use outdated terms.
👉 Therefore, the correct answer is: C. Tree, Grid iron, Ring and Radial
Key Points on Water Supply Distribution Systems:
- Tree: Main and branch lines; simple layout but less reliable.
- Grid iron: Interconnected network; uniform pressure.
- Ring: Looped system; reduces dead ends and stagnation.
- Radial: Central reservoir with radiating mains; easy to control flow.
