JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III NON-CONVENTIONAL ENERGY SOURCES Previous Question Paper (August - 2022 - R16)

B.Tech | III | II | R16 | August - 2022

Answer PaperPaper Code: 136FQMaximum Marks: 75Time: 3 Hours

Answer any five questions. All questions carry equal marks.

Main

1

What are the prospects of non-conventional energy sources in India? Explain.

15 marks

Answer

India possesses a vast potential for non-conventional energy sources, driven by its geographical location, growing energy demand, and commitment to international climate goals. The prospects are categorized by the following key sectors:

Solar Energy: India receives abundant solar radiation, with about 300 sunny days per year. The government's push through the National Solar Mission and the establishment of large-scale solar parks have made solar power one of the most cost-effective energy sources in the country. It is the cornerstone of India's target to achieve 500 GW of non-fossil fuel capacity by 2030.

Wind Energy: India has a long coastline and significant wind potential, particularly in states like Tamil Nadu, Gujarat, and Rajasthan. The development of offshore wind projects and the repowering of older, less efficient turbines are key prospects for increasing capacity and grid stability.

Biomass and Bioenergy: As an agrarian economy, India generates massive amounts of agricultural residue. Prospects lie in converting this waste into bio-CNG, ethanol, and power, which simultaneously addresses waste management issues and provides additional income to farmers.

Small Hydro Power: India has significant untapped potential in the Himalayan and Western Ghat regions for small hydro projects. These are environmentally less disruptive than large dams and are crucial for electrifying remote, off-grid mountainous regions.

Green Hydrogen: The National Green Hydrogen Mission positions India as a potential global hub for green hydrogen production. This is a critical prospect for decarbonizing hard-to-abate sectors like steel, shipping, and chemical manufacturing.

Challenges and Future Outlook: While the prospects are immense, the primary challenges include the intermittency of solar and wind, the need for advanced energy storage solutions (like battery storage and pumped hydro), and the requirement for grid modernization to handle decentralized power injection. Continued policy support, private investment, and technological innovation in storage are essential to transition India toward a sustainable and energy-independent future.

215 marks
a

What are sustainable developments and what are the ways of achieving sustainable development?

7 marks

Answer

Sustainable development is defined as development that meets the needs of the present generation without compromising the ability of future generations to meet their own needs. It emphasizes a balance between economic growth, environmental protection, and social equity.

Ways to achieve sustainable development include:

  • Transitioning to renewable energy sources such as solar, wind, and geothermal to reduce reliance on finite fossil fuels.
  • Implementing energy efficiency measures in industrial, residential, and transport sectors to minimize waste.
  • Promoting circular economy models that prioritize recycling, reuse, and waste reduction.
  • Adopting sustainable agricultural practices that preserve soil health and water resources.
  • Strengthening environmental policies and international cooperation to mitigate climate change and biodiversity loss.
b

Discuss the criteria for assessing the potential of NCES.

8 marks

Answer

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315 marks
a

Explain Beam solar radiation and diffuse solar radiation.

7 marks

Answer

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b

Differentiate the flat plate and concentrating collectors of solar energy.

8 marks

Answer

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4

Describe thermal energy storage systems and their applications.

15 marks

Answer

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515 marks
a

Explain the advantages and disadvantages of any two types of vertical axis wind turbines.

7 marks

Answer

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b

Discuss the basis of wind energy conversion.

8 marks

Answer

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615 marks
a

What is Betz limit? Derive an expression for it.

7 marks

Answer

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b

Explain the working principle of induction generator.

8 marks

Answer

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715 marks
a

Which factors should be considered while selecting a site for biogas plant?

7 marks

Answer

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b

Give different nature of geothermal resources.

8 marks

Answer

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815 marks
a

Elaborate the differences between tidal and wave power generation.

8 marks

Answer

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b

Discuss the economics of OTEC.

7 marks

Answer

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About this paper

This page contains the question paper of NON-CONVENTIONAL ENERGY SOURCES from JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD for B.Tech CE III II, August - 2022, R16.

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