gs1medium

With reference to technology for solar power production, consider the following statements:

  1. 1.'Photovoltaics' is a technology that generates electricity by direct conversion of light into electricity, while 'Solar Thermal' is a technology that utilises the Sun's rays to generate heat which is further used in the electricity generation process.
  2. 2.Photovoltaics generates Alternating Current (AC), while Solar Thermal generates Direct Current (DC).
  3. 3.India has a manufacturing base for Solar Thermal Technology but not for photovoltaics.

Which of the statements given above is/are correct?

  1. A.1 only
  2. B.2 and 3 only
  3. C.1, 2 and 3
  4. D.None
▶ Answer & Explanation

Correct answer: A. 1 only

Photovoltaic cells directly convert sunlight into electricity through the photovoltaic effect. Solar thermal systems concentrate sunlight to produce heat, which then drives a turbine to generate electricity. While photovoltaic cells do produce DC, it is typically converted to AC for grid use. Solar thermal plants also ultimately produce AC power. India has invested significantly in both photovoltaic manufacturing and solar thermal technology, aiming to develop domestic capabilities in both areas.

Source: UPSC gs1 2014

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