(SEM III) THEORY EXAMINATION 2024-25 ENERGY SCIENCE & ENGINEERING

ENERGY SCIENCE & ENGINEERING – Full Paper

TIME: 3 Hours | MAX MARKS: 70

This examination assesses a student's understanding of the scientific, engineering, and environmental aspects of energy generation, conversion, and utilization. The paper covers classical thermodynamics, nuclear energy, solar and wind technologies, bioenergy, and modern sustainability solutions such as green buildings and energy audits.

The question paper is divided into three major sections—each designed to test specific cognitive skills: knowledge, comprehension, application, and analytical reasoning.

SECTION A – Short Answer Conceptual Questions (14 Marks)

This section evaluates the student's grasp of fundamental definitions and concepts from quantum physics to renewable energy systems.

Topics Covered:

• Energy Quantization (Quantum Mechanics)

Understanding how electrons occupy discrete energy levels and why energy exchange occurs in quantized packets.

• Nuclear Binding Energy

Significance in nuclear stability, mass defect, and energy release during nuclear reactions.

• Solar Photovoltaic Device Characteristics

Essential features such as semiconducting materials, junction behavior, efficiency, and I-V characteristics.

• Solar Energy Basics

Definition, source, and role of the sun as a renewable energy provider.

• Lift Concept in Wind Turbines

Explanation of aerodynamic lift, airfoil design, and blade orientation in wind energy extraction.

• Biological Energy

Energy produced by metabolic processes, bio-organisms, biomass conversion, and biochemical energy sources.

• Concept of Green Building

Sustainable design focusing on energy efficiency, water conservation, and environmentally responsible construction.

This section tests precision, clarity, and conceptual command.

SECTION B – Medium-Length Analytical Questions (21 Marks)

Students must attempt any three questions. These require understanding, explanation, and diagram-supported reasoning.

• Heat Energy vs Mechanical Energy in Heat Engines

Thermodynamic principles, conversion cycles, and real-life examples (e.g., IC engines, steam turbines).

• Nuclear Fusion Process

Fusion of hydrogen isotopes into helium along with energy release; illustrated through nuclear reaction diagrams.

• Metal–Semiconductor Junctions in Solar Cells

Role of Schottky and PN junctions in charge separation, efficiency, and electrical output.

• Fluid Dynamics & Wind Power

Principles such as Bernoulli’s theorem, drag, lift, turbine design, placement of wind farms, and power curves.

• Using Energy Audits in Industries

How audit findings improve conservation, reduce cost, enhance compliance, and optimize energy performance.

This section focuses on application and scientific reasoning.

SECTION C – Long Analytical & Design-Based Questions (21 Marks)

Students must attempt one question from each subsection. These questions require synthesis, diagrammatic explanation, and scenario-based analysis.

C1: Heat Engines & Cooling Systems

Option A – Stirling & Carnot Engine Working

Explaining thermodynamic cycles, PV diagrams, efficiency limits, and heat transfer stages.

Option B – Refrigeration vs Heat Pump

Comparison of working principles, COP, and thermodynamic processes such as compression and expansion.

C2: Nuclear Science

Option A – Nuclear Chain Reaction

Principles behind fission, neutron moderation, and the role of control rods in maintaining criticality.

Option B – Nuclear Fuel Cycle

Covers mining, enrichment, reactor operation, reprocessing, and radioactive waste disposal.

C3: Solar Energy Systems

Option A – First vs Second Generation Solar Cells

Performance comparison including cost, efficiency, materials (silicon vs thin films), and applications.

Option B – Simple Solar Energy System Diagram

Solar panel → Charge controller/inverter → Battery → Load
Explaining the function of each component.

C4: Bioenergy & Ocean Energy

Option A – Conversion of Organic Matter into Energy

Biofuel production, anaerobic digestion (biogas), biomass combustion, and biochemical pathways.

Option B – Ocean Thermal Energy Conversion (OTEC)

Diagram of warm-surface and cold-deep-water cycle, heat exchangers, turbine operation, and industrial applications.

C5: Green Energy & Sustainability

Option A – Feasibility of Converting Existing Building into Green Building

Assessment of financial, environmental, and technical challenges.

Option B – Reducing Carbon Footprint of a Small City

Covers conservation practices, renewable energy adoption, waste management, sustainable transport, etc.

Overall Purpose of the Examination

The BOE304 exam prepares students to:

Understand scientific principles behind different energy sources

Study engineering systems that convert and utilize energy

Evaluate renewable technologies (solar, wind, biomass, nuclear)

Apply thermodynamic and quantum concepts to energy engineering

Design sustainable solutions such as green buildings and energy audits

Analyze environmental and societal impacts of energy usage

This exam ensures students can connect theoretical science with practical, sustainable engineering solutions.