Jawaharlal Nehru Technological University Hyderabad

Jawaharlal Nehru Technological University Hyderabad B.Tech III NON-CONVENTIONAL POWER GENERATION Previous Question Paper (January/February - 2023 - R16)

B.Tech | III | I | R16 | January/February - 2023

Answer PaperPaper Code: 135CUMaximum Marks: 75Time: 3 Hours

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

125 marks
a
Explain solar pond. Write its applications
2 marks

Answer

A solar pond is a large-scale solar thermal energy collector that uses a salinity gradient to trap heat in the bottom layer of water, preventing convection and acting as a thermal storage reservoir. Applications include industrial process heating, space heating, desalination, and power generation.

b
What is meant by solar spectrum? Is solar spectrum continuous?
3 marks

Answer

The solar spectrum refers to the entire range of electromagnetic radiation emitted by the sun, spanning from gamma rays to radio waves, including ultraviolet, visible, and infrared light. Yes, the solar spectrum is continuous, as it approximates the radiation of a black body at approximately 5800 K.

c
Draw the equivalent circuit of PV system and explain briefly
2 marks

Answer

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d
Explain how photovoltaic cell and photovoltaic module are related.
3 marks

Answer

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e
What is the efficiency of a wind turbine?
2 marks

Answer

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f
List out the advantages and disadvantages of wind turbines.
3 marks

Answer

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g
What is the difference between biomass and biogas?
2 marks

Answer

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h
Define gasifiers and digesters.
3 marks

Answer

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i
What are the main components of a fuel cell system? Show by means of a schematic diagram?
2 marks

Answer

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j
Briefly define the principle of tidal energy.
3 marks

Answer

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Part B

210 marks
a
Explain, with sketches, the various types of solar radiation measurement instruments.
5 marks

Answer

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b
Explain the working of concentrated collector with the help of a neat sketch.
5 marks

Answer

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OR
310 marks
a
Derive an expression for total radiation on an inclined surface. Show that a horizontal surface receives no ground reflected radiation.
5 marks

Answer

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b
Discuss the following terms: Diffuse radiation, Reflected radiation and Total radiation.
5 marks

Answer

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410 marks
a
Draw the I-V characteristics of PV cell and describe the system configuration for maximum power extraction from PV system.
5 marks

Answer

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b
Describe the principle of solar photovoltaic conversion.
5 marks

Answer

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OR
510 marks
a
A solar photovoltaic panel has an open circuit voltage of 43.6V and short circuit current of 5.45A. The maximum power that can be drawn from the panel is 175W. The maximum power occurs at a voltage of 81% of open circuit voltage. What is the optimal load resistance that needs to be connect to the terminals of the PV panel?
5 marks

Answer

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b
With a schematic diagram, describe the working of a basic photovoltaic system for power generation.
5 marks

Answer

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610 marks
a
Explain how the energy produced by a wind turbine can be stored for re-use. What are the arrangements used for starting a Darrieus wind turbine?
5 marks

Answer

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b
Explain the working of vertical axis wind mill with a neat sketch.
5 marks

Answer

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OR
710 marks
a
Derive an expression for power extracted from wind.
5 marks

Answer

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b
A horizontal axis wind turbine is installed at a location having free wind velocity of 15 m/s. The 80 m diameter rotor has three blades attached to the hub. Find the rotational speed of the turbine for optimal energy extraction?
5 marks

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810 marks
a
Discuss the significant factors effecting of aerobic digestion and anaerobic digestion.
5 marks

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b
Classify wet and dry process of energy conversion technologies.
5 marks

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OR
910 marks
a
Write a short note on: i) Geo-pressure resources ii) Magma resources.
5 marks

Answer

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b
Enumerate the Prime movers used in Geo thermal power stations.
5 marks

Answer

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1010 marks
a
Discuss the scope of utilizing ocean wave energy to generate electricity.
5 marks

Answer

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b
What are the various methods of tidal energy generation? Explain in detail.
5 marks

Answer

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OR
11
Explain the advantages of fuel cell power sources. Draw a simple sketch of H2-O2, fuel cell and explain its working.
10 marks

Answer

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About this paper

This page contains the question paper of NON-CONVENTIONAL POWER GENERATION from Jawaharlal Nehru Technological University Hyderabad for B.Tech ME III I, January/February - 2023, R16.

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