Mechanical Engineering
PAPER-II
1. THERMODYNAMICS :
Basic concept. Open and closed systems, Applications of
Thermodynamic Laws, Gas equations, Clapeyron equation, Availability, Irreversibility
and Tds relations.2. I.C. Engines, Fuels and Combustion :
Spark lgnition and compression ignition engines, Four stroke
engine and Two stroke engines, mechanical, thermal and volumetric efficiency,
Heat balance. Combustion process in S.I. and C.I. engines, preignition
detonation in S.I. engine Diesel knock in C.I. engine. Choice of engine fuels,
Octance and Cetane retings. Alternate fuels Carburration and Fuel injection,
Engine emissions and control. Solid,liquid and gaseous fuels, stoichometric air
requirements and excess air factor, fuel gas analysis, higher and lower
calorific values and their measurements.
3. HEAT TRANSFER, REFRIGERATION AND AIR CONDITIONING :
One and two dimensional heat conduction. Heat transfer from
extended surfaces, heat transfer by forced and free convection. Heat
exchangers. Fundamentals for diffusive and connective mass transfer, Radiation
laws, heat exchange between black and non balck surfaces, Network Analysis.
Heat pump refrigeration cycles and systems, Condensers, evaporators and
expansion devices and controls. Properties and choice of refrigerant,
Refrigeration Systems and components, psychometrics, comfort indices, cooling
loading calculations, solar refrigeration.
4. TURBO-MACHINES AND POWER PLANTS :
Continuity, momentum and Energy Equations. Adiabatic and
Isentropic flow, fanno lines, Raylegh lines. Theory and design of axial flow
turbines and compressors, Flow through turbo-machine balde, cascades,
centrifugal compressor. Dimensional analysis and modelling. Selection of site
for steam, hydro, nuclear and stand-by power plants, selection base and peak
load power plants Modern High pressure, High duty boilers, Draft and dust
removal equipment, Fuel and cooling water systems, heat balance,
station and palnt heat rates, operation and maintenance of various
power plants, preventive maintenance, economics of power generation.
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