Previous year question paper for TD1 (Diploma Mechanical Engineering 3rd)

1. Basic Concepts and Gas Laws (04 hrs)

1.1 Gas laws: Boyle's law, Charle's law,

1.2 Characteristics equation, Gas constant, Universal gas constant.

1.3 Thermodynamics, property, system open and closed),

surroundings, Heat and work, specific heat,

2. Laws of Thermodynamics and Processe (08 hrs)

 - Explanation of the Zeroth law of thermodynamics.

 - Explanation of First Law of Thermodynamics.

- Concept of enthalpy, internal energy, specific heat, work and

heat.

 - Clausius and Kelvin Plank statements of second law of

thermodynamics.

 - Concept of Entropy

 - Constant Volume, Constant pressure, Isothermal, adiabatic and

polytropic processes, Throttling and free Expansion, work done under

these processes.

3. Formation of Steam and its Properties (08 hrs)

- Steam Formation Wet steam, dry steam and saturated steam; dryness fraction.

 - Super heated steam; degree of super heat.

 - Latent heat of vaporization

 - Enthalpy of steam

 - Entropy; entropy increase during evaporation.

 - Temperature Entropy diagram

 - Mollier Diagram ( H-S diagram)

4. Steam Generator (06 hrs)

 - Uses of steam

 - Classification of boilers

 - Boiler mounting and accessories

 - Comparison of fire tube and water tube boilers.

 - Constructional features of Nestler boiler, Babcock and Wilcox boiler.

 - Introduction to modern boilers

5. Power Cycles (10 hrs)

 - Concept of reversibility, Carnot cycle

 - Rankine cycle and its efficiency

 - Brayton cycle

 - Otto, Diesel and Dual Combustion cycle

6. Non Conventional Sources Of Energy (06 hrs)

 6.1 Need of non conventional energy sources

 6.2 Solar Energy

 Sun and solar radiation

 Solar constant

 Solar collectors-flat plate collectors and focusing

collectors

 Solar heating-solar cooker, solar power generation

 Solar cooling

 Industrial and agricultural application of a solar

energy

 Photo voltaic cells

 Economic consideration for use of solar energy.

 6.3 Other Non Conventional Energy Sources:

6.3.1 Wind Power

6.3.2 Geothermal energy

7. Elements Of Heat Transfer (06 hrs)

 Conduction

 Convection

 Radiation

 Stefan Boltzman's law

 Simple problems of heat transfer on conduction and radiation only.