Q27-A. (i) Draw a figure and explain an onshore system of electricity production (4 marks) Q27-A (ii) Explain 2 properties of a gas produced by animal waste. (1 Mark) Q27-B.(i) A small wind turbine with a blade of diameter 190 cm is subjected to an upwind velocity 12.3 m/s and downwind velocity of 10.7 m/s. Calculate the power and energy produced by the turbine per year. Density of air is 1.3 kg/m3 (3 Marks) Q27-B(ii) Explain with examples the difference between primary and secondary batteries. (2 Marks)