Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
Which is renewable energy source?
Solar
Wind
Both solar and wind
None of above
Both solar and wind
Renewable energy sources are natural resources that replenish themselves over a human timescale, such as sunlight and wind. Both solar and wind energy are considered clean, sustainable energy sources as they do not deplete upon use and contribute minimal greenhouse gas emissions compared to fossil fuels.
Renewable energy sources are natural resources that replenish themselves over a human timescale, such as sunlight and wind. Both solar and wind energy are considered clean, sustainable energy sources as they do not deplete upon use and contribute minimal greenhouse gas emissions compared to fossil fuels.
P=21тАЛ╧БAv3 тАФ Mechanical power output of a wind turbine
E=nтЛЕh╬╜ тАФ Energy of photons incident on a solar cell
Solar energy is harvested using photovoltaic (PV) cells that convert photon energy into electrical current via the photoelectric effect (E=h╬╜). Wind energy is captured by turbines that convert kinetic energy of air masses into mechanical power using the formula P=21тАЛ╧БAv3, where ╧Б is air density, A is rotor area, and v is wind velocity.
Renewable energy is derived from processes that are replenished constantly.
Solar energy availability is intermittent, dependent on diurnal cycles.
Wind energy potential is proportional to the cube of wind speed.
Both are key pillars for 'Net Zero' power system grid transitions.
Zero operational carbon emissions
Sustainable and inexhaustible supply
Reduction in grid transmission losses via decentralized generation
High initial capital investment
Variable and intermittent supply requires energy storage
Large land area requirement for utility-scale deployment
Solar: Rooftop PV, Solar farms, Solar water heating
Wind: Onshore and offshore wind farms, community wind projects
India has set a target of 500 GW of non-fossil fuel energy capacity by 2030.
Option D is incorrect because solar and wind are scientifically classified as renewable.
C is correct тАФ Solar and wind energy are both inexhaustible natural sources, fitting the definition of renewable energy.
In power systems exams, remember that wind power output is highly sensitive to wind speed changes because PтИЭv3.