Elements of Mechanical Engineering (ME-101E)
|L T P |
|Theory: 75 Marks |
Sessional: 25 Marks
Total: 100 Marks
Time: 3 Hrs.
Properties of Steam & Boilers: Formation of steam at constant pressure, Thermodynamics properties of steam, Condition of steam, Steam tables, Measurement of dryness fraction by throttling calorimeter, Classification of boilers, Comparison of water and fire tube boilers mounting and accessories with their functions, Constructional and operational details of Cochran and Babcock and Wilcox boilers, Problems.
Steam Turbines and Condensers: Classification of turbines, Working principle of impulse and reaction turbine, Compounding of impulse turbine, Comparison of impulse and reaction turbines, Types of condensers, Cooling ponds and cooling towers, Condenser and vacuum efficiencies.
I.C. Engines and Gas Turbines: Introduction, Classification, Constructional details and working of two-stroke and four-stroke diesel and petrol engines, Otto, Diesel and Dual cycles, Working principle of gas turbine, Constant pressure gas turbine cycle.
Water Turbines, Pumps and Hydraulic Devices: Introduction, Classification, Construction details and working of Pelton, Francis and Kaplan turbines, Specific speed and selection of turbines, Classification of water pumps and their working, Hydraulic jack and lift.
Simple Lifting Machines: Definition of machine, Velocity ratio, Mechanical advantage, Efficiency, Laws of machines, Reversibility of machine, Wheel and axle, Differential pulley block, Single, double and triple start worm and worm wheel, Single and double purchase winch crabs, Simple and compound screw jacks. Problems.
Power Transmission Methods and Devices: Introduction to Power transmission, Belt drive, Rope drive, Chain drive, Pulley, Gear drive, Types of gears, Gear train, Clutches, Types and function of clutches, Types and function of brakes, Power measurement by dynamometer, Types of dynamometers.
Stresses and Strains: Introduction, Concept & types of Stresses and strains, Poisons ratio, stresses and strains in simple and compound bars under axial loading, Stress-strain diagrams, Hooks law, Elastic constants & their relationships, Principle stresses & strains and principal- planes, Mohrs circle of stresses. Numerical problems.
Bending Moment & Shear Force: Definitions, SF and BM diagrams for cantilever and simply supported beam. Calculation of maximum SF, BM and point of contra-flexure under the loads of (i) concentrated load (ii) uniformly distributed load (iii) combination of concentrated and uniformly distributed loads. Problems.
1. Strength of Materials - G.H. Ryder, Pub.- ELBS.
2. Hydraulic and Fluid Mechanics Modi and Seth, Pub. Standard Book House, New Delhi
3. Engineering Thermodynamics C.P. Arora, Pub. - TMH, New Delhi
4. Thermal Engineering A.S. Sarad, Pub. - Satya Prakashan, New Delhi.
5. Engineering Mechanics K.L. Kumar, Pub. - TMH, New Delhi.
6. Theory of Machines S.S. Rattan, Pub. TMH, New Delhi.
1. Strength of Materials Popov, Pub. - PHI, New Delhi.
2. Hydraulic Machines Jagdish Lal, Pub.- Metropolitan, Allahbad.
3. Thermal Science and Engineering D.S. Kumar, Pub. Kateria & Sons, New Delhi.
Note: The Examiners will set eight questions, taking two from each unit. The students are required to attempt five questions in all selecting at least one from each unit. All questions will carry equal marks.