JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III RENEWABLE ENERGY SOURCES Previous Question Paper (August/September - 2024 - 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
Compare the challenges associated with conventional energy sources versus renewable energy sources.
Answer
Conventional energy sources (fossil fuels) face challenges primarily related to resource depletion, high carbon emissions, and environmental degradation. In contrast, renewable energy sources face challenges regarding intermittency, high initial capital costs, and the need for advanced grid integration and energy storage technologies.
Discuss the role of renewable energy in mitigating global climate change.
Answer
Renewable energy plays a critical role in climate change mitigation by replacing carbon-intensive fossil fuels with low-carbon alternatives. By generating electricity without direct greenhouse gas emissions, these sources reduce the concentration of CO2 in the atmosphere, thereby limiting global temperature rise and minimizing the long-term impacts of climate change.
Describe the components of a solar photovoltaic system and their functions.
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Brief the importance of energy storage in solar thermal systems.
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What environmental impacts are associated with wind energy, and how can they be mitigated?
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Explain the Betz limit and its significance in wind energy conversion.
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How are biomass resources classified?
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Brief the factors influence the choice of a biogas plant type?
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Explain the working principle of tidal energy conversion system.
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Explain the principle behind Ocean Thermal Energy Conversion (OTEC) and its potential applications.
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PART – B
Explain how can renewable energy contribute to global climate targets like those in the Paris Agreement, and what strategies can accelerate their deployment?
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Compare conventional and non-conventional energy sources.
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How do hybrid renewable energy systems address the intermittency issue of sources like solar and wind, and what role do they play in ensuring energy reliability and grid stability?
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Discuss the role of international cooperation and collaboration in advancing renewable energy technologies and policies.
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Compare and contrast solar photovoltaic (PV) and solar thermal technologies in terms of their applications and efficiencies.
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What is a solar water heater, and their main components of a solar water heater? And how does it work?
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Discuss the importance of energy storage in solar energy systems. What are the current technologies used for solar energy storage?
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With neat diagram, explain the working principle of solar cooker.
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What are the main differences between horizontal-axis and vertical-axis wind turbines?
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Write short notes on demand side management.
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Derive the expression for power in the wind.
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Discuss principle used in the measurement of speed of the wind. Explain in detail about the pitch control and yaw control.
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Write short notes on Urban waste to energy conversion.
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What is a downdraft gasifier, with neat diagram explain its working.
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With neat and necessary diagram, explain bio diesel production from biomass.
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With neat diagram, explain the construction and working principle of any one digestion system.
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Explain the working principle of open-cycle OTEC. What are its advantages and suitable applications?
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With neat and necessary diagrams, explain the working principle of geothermal power plant.
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Derive the expression for power in wave.
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With neat and necessary diagrams, explain the working principle of small hydro power plant.
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