engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Electrician and Wireman Power Systems Generation of Electrical Energy
With reference to wind power generation, select the incorrect statement from the following.
1
The output is not fixed and constant.
2
After installation, electricity can be generated at a low cost.
3
It is non-polluting.
4
The rotor blades of wind turbine generators must sweep over a very small area to produce a significant amount of electricity.