Renewable Energy Questions and Answer

           1. The predominant source of energy on earth is
               (a) Electricity (b) Natural Gas (c) The Sun (d) Plants

           2. Which of the following system is an application of solar thermal energy?
               (a) Internal combustion engine (b) Biogas generation (c) Solar water heating (d) Solar lighting

           3. In what form can solar energy be used?
               (a) Thermal energy (b) Electrical energy 3. Mechanical Energy (d) All of above

           4. Which of the following appliances use solar photovoltaic technology?
              (a) Solar lantern (b) Biogas plant (c) Solar water heater (d) Solar air heater

           5. What is the most common material used in making solar cells?
               (a) Silver (b) Iron (c) Aluminium (d) Silicon

           6. The value of solar constant is approximately
               (a) 6.5 kW/m2 (b) 1.36 kW/m2 (c) 3.64 kW/m2 (d) 10 kW/m2

          7. Which of the following solar cookers is the most efficient and has the shortest cooking time?
              (a) Box cooker (b) Parabolic cooker. (c) Panel cooker (d) Cardboard type cooker

          8. A typical insulation material used in a solar collector is
            (a) Fibre glass (b) Cotton (c) Glass wool (d) None of the above

         9. The electrical output of a solar cell depends on the
             (a) Intensity of solar radiation (b) Heat component of solar radiation
             (c) Ultraviolet radiation  (d) Infrared radiation

       10  In a box type solar cooker, the solar radiations that enter and leave the box are of
            (a) Short & long wavelength respectively (b) Long & short wavelength respectively
            (c) Similar wavelengths (d) None of the above

Answers : (1). C (2). C (3). D (4). A (5). D (6). B (7). B (8). C (9). A (10). A