EDUCATION UGC NET
ENVIRONMENTAL STUDIES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Storms
|
|
|
Pressure
|
|
|
Velocity of wind
|
|
|
Direction of wind
|
Detailed explanation-1: -2.1 Wind power generation. WPG mainly depends on wind speed VW, which changes continuously with time. The wind turbines’ output power is a cubic function of wind speed and is defined in Eq. (2.9).
Detailed explanation-2: -Wind turbines require: a minimum wind speed (generally 12-14 km/h) to begin turning and generate electricity. strong winds (50-60 km/h) to generate at full capacity.
Detailed explanation-3: -The three main factors that influence power output are: wind speed, air density, and blade radius.
Detailed explanation-4: -The wind power increases with the cube of the wind speed. In other words: doubling the wind speed gives eight times the wind power.
Detailed explanation-5: -Wind power generation means getting the electrical energy by converting wind energy into rotating energy of the blades and converting that rotating energy into electrical energy by the generator. Wind energy increases with the cube of the wind speed, therefore WTGs should be installed in the higher wind speed area.