Hydropower Engineering MCQ with answer and solution

Concept

Hydropower plant classification based on pondage

Formula

NONE

Step-by-step solution

1. Run-of-river hydropower plants utilize the natural rate of flow of a river to generate electricity. 2. When limited storage capacity is provided to regulate daily flow variations, it operates with pondage. 3. Without storage facilities, the plant operates strictly on direct inflow as run-of-river without pondage. Answer: D

Explanation

Run-of-river hydropower plants utilize the natural flow rate and elevation drop of a river without requiring large storage reservoirs. They can be operated without any storage by using incoming river flow directly, or with small pondage to balance daily fluctuations in power demand.

Why the other options are wrong

A) Mini hydel plants are classified based on power capacity rather than pondage operational type. B) Pumped storage power plants use upper and lower storage reservoirs rather than optional pondage. C) Low head plants are categorized by available hydraulic head rather than pondage availability.

Shortcut

Run-of-river power plants can operate with or without pondage.

Common mistake

Assuming run-of-river hydropower plants cannot have pondage or confusing them with pumped storage plants.