JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III NON CONVENTIONAL ENERGY SOURCES Previous Question Paper (July - 2023 - R16)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
What are the limitations of RES?
Answer
The primary limitations of Renewable Energy Sources (RES) include their intermittency (non-availability at all times), low energy density requiring large land areas, and high initial capital costs compared to conventional power plants.
Compare Solar, Wind energy systems.
Answer
Solar energy systems convert sunlight into electricity or heat using PV cells or collectors, whereas wind energy systems convert the kinetic energy of wind into mechanical or electrical energy using turbines. Solar energy is generally more predictable on a seasonal basis but unavailable at night, while wind energy is highly variable and site-specific, often requiring high-altitude or coastal locations.
List out various types of solar energy collectors.
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List out various photovoltaic solar energy applications.
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What are the causes for the wind formation?
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Explain the major application of wind power.
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Classify geothermal sources.
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What is the origin of biomass energy? What is its global potential?
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What are the main advantages and disadvantages of OTEC system?
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What is OTEC? What is the minimum requirement to operate the OTEC system?
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Part B
Discuss in detail about the statistics on conventional energy sources and supply in developing countries.
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Explain the working principles of ocean and geo thermal energy systems.
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Discuss the criteria for assessing the potential of NCES.
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Compare ocean and geo thermal energy systems.
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Write short notes on Mathematical analysis of Flat plate collector.
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With neat and necessary diagrams, explain the operation of Solar Stirling engine.
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Explain the working principle of Grid connected solar power satellite.
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Differentiate between HAWT and VAWT.
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With neat and necessary diagram, explain the working principle of Induction type generators.
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Sketch the diagram of a HAWT and explain the function of its main components.
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Explain the effects of density, frequency variances, angle of attack, and wind speed on wind energy conversion.
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What is biomass gasifier? Write its gasification reactions.
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What is meant by fermentation, aerobic, anaerobic digestion? Explain in detail.
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Explain the function of Deenbandhu biogas digester with a neat sketch and also mention its merits and demerits.
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What are the limitations and applications of OTEC plants?
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From fundamentals design 5 Mw OTEC pro-commercial plant.
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Write short notes on Economics of OTEC.
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Discuss the Status of multiple product OTEC systems.
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