1 a) What are the advantages and limitations of renewable energy sources. [7] b) What are the various instruments to measure solar radiation? Explain in brief? [8] 1 a) Write short notes on extra terrestrial and terrestrial Solar radiation. [7]b) Derive an expression for total radiation as an inclined surface. Show that ahorizontal surface receives no ground reflected radiators. [8]1 a) Define declination angle, hour angle, zenith angle and solar azimuth angle. [5]b) What is the role and potential of renewable energy sources? Write about solar energy option? Write applications of Solar energy?[10]1 a) Explain the procedure to estimate the average solar radiation. [8]b) Explain about basic earth sun angles [7]1 a) Explain the Role and potential of new and renewable Energy Sources. [8]b) Discuss the working of Pyranometer [7]1 a) How the solar radiation can be estimated at a particular location? [8]b) Explain how solar constant is calculated [7]1 a) Explain about the structure of the sun [7]b) Define the termsi) Altitude angle ii) Incident angle iii) Zenith angle iv) Solar azimuth angle [8]

2 a) Perform thermal analysis to a flat plate collector and derive the expression for useful heat gained by the fluid [10]b) Discuss the advantages and disadvantages of flat plate collectors [5]2 a) Explain the various Concentrating type collectors with neat diagrams? [8]b) What are the main advantages of flat plate solar collector? [7] 2 a) Explain the various Concentrating type collectors with neat diagrams? [8]b) What are the main advantages of flat plate solar collector? [7]2 a) Perform thermal analysis to a flat plate collector and derive the expression for useful heat gained by the fluid [10]b) Discuss the advantages and disadvantages of concentrating collectors [5]2 a) Perform thermal analysis to a flat plate collector and derive the expression for useful heat gained by the fluid [10]b) How do you classify concentrating collectors? [5]2a) Differentiate between flat plate collectors and concentrating collectors. [7]b) Give a neat diagram of central tower receiver power plant and explain its operation. [8]2 a) What are the advantages and disadvantages of Concentrated collectors over Flat plate collectors? [7]b) Explain the principle and construction of Flat plate collectors? [8]2 a) Describe Fresnel lens type collector and write the expressions for performance analysis of a Concentrating collector? [8]b) Explain the factors affecting the performance of a Flat plate collector? [7]2 a) Perform thermal analysis to a flat plate collector and derive the expression for useful heat gained by the fluid [10]b) Explain about advanced collectors [5]

3 a) Describe in brief the different energy storage methods used in the solar system. [8]b) With a neat sketch explain the working of natural circulating solar water heater [7]3 a) What is a solar cell? Explain principle of operation.[8]b) Explain the working of sensible heat storage system [7]3 a) List out some potential sites for wind energy in India and explain the Betz criteria? [7] b) Classify and explain wind energy conversion systems? [8] 3 a) Write short notes about solar ponds and mention application of Solar pond? [7]b) Explain in brief about different methods for storing Solar energy? [8]3 a) What is the principle of solar photovoltaic power generation? What are the main elements of a PV system? [8]b) With a neat sketch explain the working of forced circulating solar water heater [7]3a) List out some potential sites for wind energy in India and explain the Betz criteria? [7]b) Classify and explain wind energy conversion systems? [8]3 a) State principle of Solar thermo conversion and mention various applications ofSolar energy in brief? [10]b) Write about the concept of Solar Still?3 a) Write about Solar distillation and Solar Cookers in brief? [8]b) Discuss in detail the various parameters to be considered in detail for the design ofSolar water heating systems and its efficiency. [7]3 a) Write short notes on solar distillation [7]b) With a neat sketch explain the working of non-convective solar pond [8]

4 a) What are the major sources and locations for the generation of power from the wind energy? Explain the important parameters to be considered for the site selection. [7]b) Show that for horizontal wind mill the maximum power can be obtained when exit velocity = (wind velocity)/3 and the maximum power is(8/27)_AV 3 [8]4 a) Prove that in case of horizontal axis wind turbine maximum power can be obtained when the exit velocity= 1/3 (wind velocity) and Pmax=(3/27)AV [9]b) Explain Horizontal axis wind turbine main components and their functions. [6]4a) Derive the expression for power developed due to wind in a horizontal axis wind turbine.b) Describe with a neat sketch, the working of a wind energy system with main components 4 a) What are the factors affecting the performance of bio gas digester. [7] b) Explain different types of bio fuels? [8] 4 a) What are the factors affecting the performance of bio gas digester. [7]b) Explain different types of bio fuels? [8]4 a) What are the advantages and limitations of Horizontal axis wind mill over verticalaxis wind mill? Explain. [7]b) Draw the performance characteristics curves of different wind mills, and explainsalient points. [8]4 a) Explain the working principle of Horizontal axis wind mill with suitable diagrams. [8]b) Derive the expression for the power generated by a wind mill from first principles. [7]4 a) Prove that in case of horizontal axis wind turbine maximum power can be obtained when the exit velocity= 1/3 (wind velocity) and Pmax=(3/27)AVb) Discuss the advantages and disadvantages of horizontal and vertical axis windmill. 4 a) Derive the expression for power developed due to wind in a horizontal axis wind turbine. [9]b) Describe with a neat sketch, the working of a wind energy system with main components [6]

5 a) Explain the operation of CI engine working on biogas [8]b) Explain the process of anaerobic digestion [7]5a) Explain various bio-mass energy conversion technologies in detailb) Briefly explain the process of fermentation [8]5 a) What are the main advantage and disadvantages of bio mass energy? [7]b) Explain bio-mass utilization in IC engines. [8]5a) What are the environmental impacts of geothermal energy? [8] b) Explain the hot water geothermal system? Discuss the applications. [7] 5a) What are the environmental impacts of geothermal energy? [8]b) Explain the hot water geothermal system? Discuss the applications. [7]5 a) Explain the process of commercial production of ethanol from biomass. [7]b) What are the combustion characteristics of biogas? [8]5 a) What is the present status of development of bio mass energy resource in India? [7]b) Explain biogas utilization for cooking? [8]5 a) What is meant by anaerobic digestion? What are the factors, which affect biodigestion? [8]b) Explain the constructional details and working of KVIC digester [7]5 a) How Biomass Conversion takes place? Explain the Process photosynthesis. What are the conditions, which are necessary for it? [8]b) How are biogas plants classified? Explain them briefly [7]

6a) Explain the functioning of a binary fluid geothermal power system? [8]b) Discuss the Geothermal energy Resources in India. [7]6 a) What are the main advantages and disadvantages of ocean wave energy? [8] b) What are the main hurdles in the development of tidal energy? [7] 6 a) What are the difficulties in large scale utilization of geothermal energy? [7]b) What are the various categories of geo thermal energy resources? Explain. [8]6 a) What are the main advantages and disadvantages of ocean wave energy? [8]b) What are the main hurdles in the development of tidal energy? [7]6 a) Explain the operational features of vapor dominated geo-energy system with aneat sketch. [8]b) Explain the potentials of geothermal energy and also describe the characteristicsof geothermal energy. [7]6 a) What are the merits and de-merits of geothermal energy? [7]b) Explain the various methods to extract geothermal energy? [8]6a) Explain the principle of working of Geothermal power plants and discuss the difficulties and disadvantages of geothermal energy for generation of electricity. [8]b) What are the different types of prime movers used in geothermal energy conversion system [7]6 a) Explain the principle and operation of a liquid dominated geo energy system with a neat sketch [8]b) Discuss the Geothermal energy Resources in India. [7]6 a) Explain the principle and operation of a vapour dominated geo energy system with a neat sketch [8]b) Explain various methods to extract geothermal energy [7]

7a) Explain the power generation from single tide system. [8]b) What is the principle behind OTEC system? Explain the working of Hybrid cycle OTEC system with a neat sketch. [7]7 a) Explain the working of Anderson cycle OTEC system with neat sketch [8]b) Explain the power generation from single ebb cycle system. [7]7 a) Explain the types of PV cells, and I-V characteristics in brief? [8] b) What are the advantages and disadvantages of photo voltaic energy conversion? [7]7 a) Explain the types of PV cells, and I-V characteristics in brief? [8]b) What are the advantages and disadvantages of photo voltaic energy conversion? [7]7 a) Explain the power generation from double cycle system for tidal energyutilization. [8]b) Explain the principle and working of a high level reservoir wave machine withneat sketch? [7]7 a) Explain the working principle of OTEC with suitable diagram [8]b) Differentiate between Wave energy and tidal energy resources. [7]7 a) Describe the phenomenon of tides and how these tides are helpful in power generation. [7]b) Draw the diagram of mini hydel power plant and explain the operational features.[8]7 a) Estimate the energy and power in simple single basin tidal system [8]b) Explain with a neat sketch the working of wave energy conversion system by folats. [7]7 a) What is the principle behind OTEC system? Explain the working of open cycle OTEC system with a neat sketch. [8]b) Explain the power generation from double cycle system for tidal energy utilization [7]

8 a) Discuss the criterion for selection of materials for thermo electric power generation. [8]b) What is Hall Effect? Explain its significance. [7]8 a) Explain the principle of MHD power generation. [8]b) Derive an expression for the efficiency of thermo electric generators. [7]8 a) Explain liquid metal system of MHD power generation with neat schematic. [8]b) Explain petrochemical regenerative fuel cell. [7]8 Explain the following terms: a) Sensible and Latent Heat b) Solar pond c) Stratified storage unit d) Solar Chimney8 a) Draw the diagram of Magneto-Hydro dynamic (MHD) power generation and explain. [8]b) What is fuel cell? Explain the working principle of fuel cell with a neat diagram. [7]8 a) Explain the working principle of thermo-electric power generation. [8]b) Describe the working of Ion exchange membrane fuel cell. [7]8 a) Explain about open cycle MHD system [8]b) Explain about Economic aspects of MHD power generation [7]8 a) What is Joule-Thomson Effect? Explain [6]b) Explain about closed cycle MHD system [9]