IV  B.Tech II

NON CONVENTIONAL SOURCES OF ENERGY

 (Electrical and Electronics Engineering)

Time : 3 hours                                                                                                Max. Marks: 75

Answer any Five Questions

All Questions carry equal marks

*****

• Explain the following terms:

1. i) Altitude Angle ii) Incident Angle iii) Zenith Angle  iv) Solar Azimuth Angle      v) Hour Angle [15]

• a) Explain the principle of conversion of solar energy in to heat. [8]      b) What are the advantages and disadvantages of concentrating collectors over a           flat - plate collectors? [7]

• a) Explain with a neat sketch the working of a wind energy systems(WECS) with main components       [8]  b) What are the advantages of vertical axis machines over horizontal type?  Describe a rotor for relatively low velocity speed [7]

• a) Explain Maximum Power point tracking procedure for a Wind System [8] b) Explain the importance of Buck-Boost converter in PV System [7]

• a) What is meant by wet fermentation and dry fermentation? [8] b) What are the factors which affect the size of the Bio Gas Plants? [7]

• a) Define a Geothermal Source. [5]  b) Explain the principle of total flow concept. Compare it with other system [10]

• Explain with neat sketches the various methods of Tidal power generation [15]     .What are the limitations of each method

• Write Short notes on the Following:
  1. Materials used or Biogas generation  
  2. Fuel cells  
  3. Solar radiation data [15]

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NON CONVENTIONAL SOURCES OF ENERGY

 (Electrical and Electronics Engineering)

Time : 3 hours                                                                                                Max. Marks: 75

Answer any Five Questions

All Questions carry equal marks

*****

• a) Explain about the Beam and Diffuse radiation [5]       b) Calculate the angle made by the beam radiation with the normal to a flat-plate    collector, pointing due south located in New Delhi (28⁰ 38^’N,77⁰ 17^’ E) at               9 : 00 hour, solar time on December 1. The collector is tilted at angle of 46⁰    with the horizontal.       [10]

• What are the main components of a flat – plate solar collector, explain the [15]     function of each

• a) Explain the basic principle of wind energy conversion? [7] b) Explain horizontal axis type aerogenerators. [8]

• Explain the outcome and different considerations that need to be taken care  

             while connecting PV cells in Series and Parallel                       [15]

• a) What are the advantages and disadvantages of floating Drum Plant [8]       b) What is a community biogas plant? What are the main problems encountered          in its operation           [7]

• a) What are the limitations of a flashed steam system? [8] b) What are the advantages of double flash system? [7]

• Explain the closed cycle OTEC System, with its advantages over open cycle system     [15]

• Write Short notes on the Following:
  1. Main Applications of Biogas  
  2. Limitation of Wave energy conversion  
  3. Solar cooling Technique [15]

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NON CONVENTIONAL SOURCES OF ENERGY

 (Electrical and Electronics Engineering)

Time : 3 hours                                                                                                Max. Marks: 75

Answer any Five Questions

All Questions carry equal marks

*****

• a) Define Solar Constant and explain the factors on which it depends.         [8]       b) Calculate the Sunset hour angle and day length at a location latitude of 38⁰,on            [7] Feb 18

• a) How solar air collectors are classified? What are the main applications of a [8] Drier?
  1. Explain the different methods of Sun tracking, and why orientation is needed [7] in concentrating type collectors?

• Derive the expression for power developed due to wind [15]

• Explain Maximum Power point tracking procedure for a photovoltaic System [15]

• a) How biomass conversion takes place [7] b) How are Gasifiers classified? What is Pyrolysis? [8]

• a) Explain Binary cycle system for liquid dominated system [8]  b) What are the advantages and disadvantages of Geothermal energy forms? [7]

• a) What are the advantages and limitations of small scale hydro-electric power [8] generation
  1. What are the main types of OTEC power plants? Explain their working in [7] Brief?

• Write Short notes on the Following: [15]
  1. Applications of Gasifiers
  2. Direct Energy Conversion
  3. Mini-Hydel Power plants w.r.t. OTEC

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NON CONVENTIONAL SOURCES OF ENERGY

 (Electrical and Electronics Engineering)

Time : 3 hours                                                                                                Max. Marks: 75

Answer any Five Questions

All Questions carry equal marks

*****

• a) What are the reasons for variation in solar radiation reaching the earth than  received at the outside of the atmosphere?            [8]       b) What is the difference between a pyrheliometer and a pyranometer?   [7]

• Enumerate the different types of concentrating type collectors. Explain the             collector used in power plant for generation of Electric energy           [15]

• a) What are the main considerations in selecting a site for wind generators [8] b) How are wind energy systems (WECS) classified? Discuss in brief [7]

• a) Explain on what factors will the quality of a PV Cell depend? [8] b) Explain the different Algorithms used in MPPT for a Photo Voltaic System [7]

• What is meant by anaerobic digestion? Explain the factors which effect

            Biodigestion                                                                               [15]

• a) Classify Geothermal Sources [7]       b) Explain the main types of turbines, which may be used for Geothermal          energy conversion     [8]

• a) What is the basic principle of ocean thermal energy conversion (OTEC)? [8] b) Explain the Dolphin type wave power machine [7]

• Write Short notes on the Following:  
  1. Betz Criteria  
  2. Selection of fuels  
  3. Combustion characteristics of Biogas. [15]

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