Write down your answer for the 6 following questions (English or French are accepted, and detailed answers are expected) 1) Name 5 different energy sources and precise: fuel nature, production principle, type of energy produced (maximum 5 lines for each source) 2) Specify on the following pie chart corresponding to the actual distribution of energy sources in France, which energy source could correspond to each section? 3) What is a MV insulated electrical cable made of? (Detail: layers' names, properties, purpose, materials) 4) Which types of insulating materials are installed on today electrical cable grid? Which one is the best? How the latter is manufactured? (maximum 10 lines) 5) Present 4 materials from different families that can be used as photoactive materials in a solar cell? Precise their advantages and drawbacks. 6) Explain the operating principle of two types of solar cells cited in your last answer (in addition of the text, illustrations are welcome).