Answer the following problems.

problem 1)a) With the help of appropriate diagram, describe horizontal axis wind turbine with two blades and list out the advantages and disadvantages of the same.

b) Describe the factors to be considered for the site selection and digester design of a biogas plant and briefly describe the digester design of a biogas plant.

problem 2)a) With a neat sketch, describe the construction and working of a circular fixed dome digester (china) type of biogas plant.

b) With a neat schematic diagram, describe the working of hybrid cycle ocean thermal energy conversion system.

problem 3)a) With a neat schematic diagram, describe the components and working of a tidal power plant.

b) With a neat diagram, describe the power generation from high level reservoir type wave power machine.