What is the effect of the increased speed of wind on the rate of evaporation? 

The wind blows away the evaporated particles that are near the surface of the liquid. With the increased speed of the wind, the air around the surface of the liquid will be less saturated with the vapors of the liquid. As a result, more molecules of the liquid can be evaporated.

Thus, with an increased wind speed rate of evaporation also increases.