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Delhi Police Constable Exam Model Paper 8
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© examsnet.com
Question : 20
Total: 100
Which of the following utilises sunlight in a direct fasion?
Photovoltaic cell
Solar thermal cells
Bio gas production
Both 1 and 2
Validate
Solution:
The correct answer is option 4i.e
Both 1 and 2.
Photo Voltaic cell
utilizes sunlight in a direct fashion.
A photovoltaic cell
converts solar energy into electric energy.
The process of conversion of solar energy into electric energy is called a
Photovoltaic Effect.
Solar thermal cells are utilized for direct heating of fluid, it can be water or other fluid depending on application.
Biogas is produced naturally from the decomposition of natural waste.
It primarily consists of
Methane and Carbon dioxide.
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