Question

A hydropower plant developed at the site of a drop in an irrigation canal is of the type ________

(a) runoff river plant

(b) storage plant

(c) pumped storage plant

(d) tidal plant

The question was asked in an internship interview.

This intriguing question comes from Thermal and Hydropower in portion Hydro Electric Power of Irrigation Engineering

Answer 1

The correct option is (a) runoff river plant

To explain I would say: In the Run-off river installation, power is generated on the basis of day to day flow in the river. To maintain the water level at a pre-determined level, a weir or a barrage across the river is sometimes constructed. The excess water during the peak-off hours is temporarily stored on u/s side of the barrage.