Question

The fraction of time during a given period that the turbine is actually on line is called?

(a) Availability factor

(b) Flat rating

(c) Cut in velocity

(d) Cut out velocity

This question was addressed to me during an interview for a job.

I'm obligated to ask this question of Wind Turbine Operation in section Wind Energy of Energy Engineering

Answer 1

The correct option is (a) Availability factor

The best I can explain: The availability factor is defined as the fraction of time during a given period that the turbine is actually on line. The actual wind velocity at the propeller hub that determines the turbine power is usually higher.