ME-604-C Renewable Energy Technology - Dec 2024 Question Paper

Under each question, How to answer lists the points an answer should cover, outlined by CampusPrep from the syllabus. Check the details against your textbook.

1. 7 Marks
   aWhat do you understand by measurement of Solar Radiations?
   How to answer

   • Define solar radiation components - beam, diffuse, global
   • Need and purpose of measurement for system design
   • Instruments - pyranometer, pyrheliometer, sunshine recorder
   • Units and data representation
2. 7 Marks
   bExplain the constructional features and working of solar Flat plate collector.
   How to answer

   • Construction - absorber plate, glazing, insulation, casing, tubes
   • Working - greenhouse effect and heat transfer to fluid
   • Neat labelled diagram of flat plate collector
   • Applications and losses
3. 7 Marks
   aHow many types of Semiconductors or Solar cells are used to fabricate PV cells and modules?
   How to answer

   • List semiconductor materials - Si mono, poly, amorphous, GaAs, CdTe, CIGS
   • p-n junction formation for PV cell
   • Cell to module fabrication steps
   • Comparison of efficiencies
4. 7 Marks
   bWhat are limitations of SPV system?
   How to answer

   • Define SPV system
   • Intermittency and low efficiency limitations
   • High cost, storage and area requirement
   • Maintenance and environmental dependence
5. 7 Marks
   aExplain the WECS. Also Explain the Various types of WECS with Suitable Diagram.
   How to answer

   • Define WECS and its components
   • Classification - horizontal and vertical axis types
   • Neat diagram of WECS layout
   • Working of different types
6. 7 Marks
   bWhat prohibits large scale utilization of Wind power for electricity?
   How to answer

   • Intermittency and variability of wind
   • Grid integration and storage issues
   • High capital cost and noise, land requirement
   • Site-specific and environmental constraints
7. 7 Marks
   aExplain the principle of Ocean Thermal Energy Conversion System.
   How to answer

   • Principle - temperature difference between surface and deep ocean
   • Open, closed and hybrid OTEC cycles
   • Thermodynamic working and efficiency limit
   • Neat layout of system
8. 7 Marks
   bExplain the Principle of Tidal Energy Conversion System with Suitable Diagram.
   How to answer

   • Principle - tidal range and water head for power
   • Single and double basin schemes, ebb and flood generation
   • Neat diagram of tidal plant with barrage and turbine
   • Working cycle and limitations
9. 7 Marks
   aExplain the Site Selection of Geothermal Power Plant.
   How to answer

   • Geological, thermal gradient and hydrogeological criteria
   • Proximity to load, water availability, accessibility
   • Environmental and seismic considerations
   • Exploration methods for site assessment
10. 7 Marks
    bExplain the working of Fuel Cell for Electricity Generation.
    How to answer

    • Fuel cell principle - electrochemical conversion
    • Construction - anode, cathode, electrolyte
    • Hydrogen-oxygen reaction and electron flow
    • Diagram and electricity generation steps
11. 7 Marks
    aExplain a Wind diesel hybrid system.
    How to answer

    • Concept of wind-diesel hybrid operation
    • Components and system layout with diagram
    • Modes of operation and control
    • Advantages for remote loads
12. 7 Marks
    bWhat is an Aerofoil? Explain it's types.
    How to answer

    • Define aerofoil and its nomenclature
    • Types - symmetric, cambered, etc.
    • Lift and drag principle
    • Application in wind turbine blades
13. 7 Marks
    aDifferentiate between Micro, Mini and Small hydro system.
    How to answer

    • Capacity ranges for micro, mini, small hydro
    • Head, discharge and layout differences
    • Tabular comparison of classifications
    • Examples and applications
14. 7 Marks
    bExplain Biochemical conversion process.
    How to answer

    • Define biochemical conversion of biomass
    • Anaerobic digestion and fermentation steps
    • Biogas production process flow
    • Factors affecting conversion
15. 14 Marks
    Write short notes on the Following.

    1. a)Power curve of wind turbine
    2. b)Design of biogas plant
    3. c)Selection of turbine for hydro plant
    4. d)Fuel cell advantages
    How to answer

    • Power curve - cut-in, rated, cut-out speeds
    • Biogas plant design - digester, gas holder sizing
    • Turbine selection by head and discharge
    • Fuel cell advantages - efficiency, clean, modular