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UPSC Exams UPSC-CSE Prelims (GS) Science & Technology 2014 Paper-1 Shift-1 Medium +2 -0.5
With reference to technologies for solar power production, consider the following statements : 1. ‘Photovoltaics’ is a technology that generates electricity by direct conversion of light into electricity, while, ‘Solar Thermal’ is a technology that utilizes the Sun’s rays to generate heat which is further used in electricity generation process. 2. ‘Photovoltaics’ generates Alternating Current (AC), while Solar Thermal generates Direct Current (DC). 3. India has manufacturing base for Solar Thermal technology, but not for ‘Photovoltaics’. Which of the statements given above is/ are correct ?
Correct Answer: A. 1 only
Explanation: Photovoltaic technology converts light directly into power, whereas solar thermal systems use sunlight to produce heat for electricity generation. Both of these methods, for which India possesses manufacturing capabilities, produce direct current.
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