BTECH Renewable Energy Resources Past Paper 2021-22 PDF

Subject Code: XXXXX Roll No: BTECH (SEM-7) RENEWABLE ENERGY RESOURCES 2021-22 TIME:3 HOUR...

Subject Code: XXXXX Roll No: BTECH (SEM-7) RENEWABLE ENERGY RESOURCES 2021-22 TIME:3 HOUR Total Marks: 100 Instruction: Attempt the questions as per the given instructions. Assume missing data suitably. SECTION - A Attempt All Parts in Brief 2*10 = 20 Q1 Questions Marks (a) Describe photovoltaic effect. 2 (b) Write down the properties of polycrystalline silicon cell. 2 (c) Calculate the angle of declination for 7th May of a leap year. 2 (d) Define solar constant and solar isolation. 2 (e) What is meant by dry steam, wet steam and hot water in geothermal system ? 2 (f) Write the chemical reaction which takes place in alkaline fuel cell. 2 (g) Write short note on HAWT and VAWT. 2 (h) State Seebeck effect and Peltier effect. 2 (i) What do you mean by recycling? 2 (j) Write the advantages and disadvantages for floating drum and fixed dome type biogas plant. 2 SECTION - B Attempt Any Three of the following 3*10 = 30 Q2 Questions Marks (a) Discuss the main features of various types of renewable and non-renewable energy sources. Also explain the 10 importance of non-conventional energy sources in the context of global warming. (b) Describe the application and classification of hydrothermal resources. 10 (c) With the help of a schematic diagram, explain the operation of closed cycle MHD generating system. 10 (d) What is the basic difference between thermoelectric and thermionic conversion system ? Also, explain the 10 working of thermoelectric generators. (e) Explain availability, conversion theory of biogas plant and energy conversion from biomass. 10 SECTION - C Attempt Any One of the following 5*10 = 50 Q3 Questions Marks (a) Write a short note on PV arrays and system charge controllers. What are the advantages and disadvantages of 10 photovoltaic solar energy conversion ? (b) Describe various direct and indirect application of solar energy. 10 Q4 Questions Marks (a) Classify different types of solar thermal collector and show the constructional details of a flat plate collector. 10 What are its main advantages ? (b) Draw a schematic diagram for solar pond based electric power plant with cooling tower and explain its 10 working. Q5 Questions Marks (a) Explain the working of geothermal power plants. Discuss the various technical developments. 10 (b) Explain the working of molten carbonate fuel cells using appropriate diagram and write various chemical 10 reactions involved in this type of fuel cell. Q6 Questions Marks (a) What is the principle of wind energy conversion ? What methods are used to overcome the fluctuating power 10 generation of windmills ? (b) Using Betz model of a wind turbine, derive the expression for power extracted from wind. Under what 10  condition does the maximum theoretical power can be extracted from the wind turbine ? Q7 Questions Marks (a) Explain the process of gasification of solid biomass. What is the general composition of the gas produced 10 and what is its heating value ? What are its applications ? (b) Explain the principle, working and efficiency of OTEC power plant. What are the environmental effects of 10 OTEC ?