cameroon gce intermediate level 2025 photovoltaic systems 1

Based on the image provided, here is the extracted data.

1. Solar collector converts solar energy into:A. Chemical energy

   B. Mechanical energy

   C. Thermal energy

   D. Electrical energy

2. Why is renewable energy termed eco-friendly?A. Because it has a low maintenance cost

   B. Because it being replenished as it is being used

   C. Because it is given by nature

   D. Because it does not pollute the environment

3. Choose from the list below the factor that affects solar radiation.A. Wind

   B. Tild angle

   C. Size of panel

   D. Cloud cover

4. Which of the following forms of renewable energy has been traditionally used for over centuries?A. Hydro-electric

   B. Wind

   C. Solar energy

   D. Fossil fuel

5. Give the name of the energy source that is responsible for the main energy on earth.A. The wind

   B. Water

   C. Tides

   D. The sun

6. Name a disadvantage of solar energy.A. It pollutes the atmosphere

   B. It has a high maintenance cost

   C. It has a high initial cost of installation

   D. It makes a lot of noise

7. The measure of the energy density of sunlight is termed:A. irradiation

   B. irradiance

   C. air mass

   D. peak sun

8. The measure of the power density of sunlight is termed:A. irradiation

   B. irradiance

   C. air mass

   D. peak sun

9. What is the name of the energy generated from wood?A. Biomass

   B. Solar

   C. Hydro

   D. Coal

10. Give the name of the instrument used in measuring the amount of solar irradiation reaching a given surface.A. Sunshine recorder

    B. Solarimeter

    C. Thermometer

    D. Radiometer

11. Which of the following is an example of a pentavalent atom?A. Boron

    B. Phosphorus

    C. Indium

    D. Gallium

12. A semiconductor with impurities is known as a/anA. Conductor

    B. Dopant

    C. Extrinsic

    D. Intrinsic

13. What is dopping?A. It is the process of adding impurities to a semiconductor material

    B. It is the process of bonding two atoms

    C. It is the process by which an electron moves to fill a hole

    D. It is the process of ionisation

14. Select from the list below the material that is mostly used for producing solar cells.A. Cadmium

    B. Silicon

    C. Germanium

    D. Selenium

15. How many cells are there in a 100W, 18.4V solar panel if a cell produces 0.46V?A. 40

    B. 32

    C. 18

    D. 16

16. If ten solar cells of 2A each are connected in series and one of the is shaded, what will be the resulting output current?A. 0A

    B. 20A

    C. 10A

    D. 2A