Question

What happens if the turbine generators are smaller and operate much longer?

(a) Resulting work is reduced

(b) High power generation

(c) Less power loss

(d) Less sound is created

I got this question during an interview.

The query is from Tidal Power in section Ocean Energy & Geothermal Energy of Energy Engineering

Answer 1

The correct choice is (a) Resulting work is reduced

For explanation: Because the average head h is lower and work and power are proportional to h^2, turbine generators are much smaller and operate over a much longer period. The resulting total work is reduced.