ex-703-energy-audit-and-management-nov-2022 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
   aDescribe the role of energy managers.
   How to answer

   • Define energy manager and energy management function
   • Duties: policy, audit coordination, monitoring and targeting
   • Implementation of conservation measures and reporting
2. 7 Marks
   bList the various equipment required for energy audit and explain the working principle of any one from them.
   How to answer

   • List audit instruments: power analyzer, flue gas analyzer, lux meter, etc.
   • Select one instrument
   • Explain its working principle and use in audit
3. 7 Marks
   aExplain the general principles of energy management.
   How to answer

   • Define energy management
   • Explain general principles: control, monitoring, targeting
   • Steps for continuous improvement and commitment
4. 7 Marks
   bWrite the barriers in energy auditing and how it can be eliminated?
   How to answer

   • Define barriers: technical, financial, organizational, awareness
   • Explain each barrier with example
   • Suggest measures to eliminate them
5. 7 Marks
   aExplain the use of capacitor for power factor improvement.
   How to answer

   • Define power factor and reactive power need
   • Explain capacitor supplying leading VAR
   • Effect on current, losses and power factor improvement
6. 7 Marks
   bExplain the direct and indirect methods for calculating efficiency of a boiler.
   How to answer

   • Define boiler efficiency
   • Explain direct method: heat output / heat input
   • Explain indirect method: 100 minus losses
7. 7 Marks
   aDescribe the bad effect of harmonics on electrical equipment.
   How to answer

   • Define harmonics and sources
   • Effects: heating, derating, malfunction, resonance
   • Impact on motors, transformers, capacitors
8. 7 Marks
   bExplain the scope of energy conservation in lighting system.
   How to answer

   • Identify lighting energy use areas
   • Scope: efficient lamps, controls, daylighting
   • Maintenance and design optimization
9. 7 Marks
   aDescribe the role of furnaces in steel industries with the help of neat diagram.
   How to answer

   • Define types of furnaces in steel industry
   • Explain role in melting, reheating, heat treatment
   • Provide neat labelled diagram of furnace
10. 7 Marks
    bExplain flash steam utilization using suitable example.
    How to answer

    • Define flash steam formation
    • Explain flash steam recovery system
    • Illustrate with suitable example and application
11. 7 Marks
    aDescribe the features of energy efficient motors.
    How to answer

    • Define energy efficient motors
    • Features: improved design, low losses, higher efficiency
    • Benefits: power saving, better power factor, longer life
12. 7 Marks
    bExplain the procedure to save the energy of a lighting system.
    How to answer

    • Steps: audit of existing lighting load and lux levels
    • Replacement, controls and daylight use
    • Maintenance schedule and monitoring savings
13. 7 Marks
    aDistinguish between 'preliminary energy audit' and 'detailed energy audit'.
    How to answer

    • Define preliminary vs detailed audit
    • Compare scope, time, data, instruments and outcome
    • Tabulate differences
14. 7 Marks
    bExplain payback and return on investment with suitable example.
    How to answer

    • Define payback period and ROI formulas
    • Explain with numerical example
    • Interpret results for investment decision
15. 14 Marks
    Write a short note on any two: a) ESCO concept b) Life cycle costing c) Illumination Lux
    How to answer

    • Lead-in: write short notes on any two items
    • For each chosen item: definition and key points
    • Applications/relevance to energy audit and management