Elements of Mechanical Engineering VTU C Cycle Notes



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VTU Engineering Chemistry Cycle Notes Free Download
Subject code: 18ME15, 18ME25

This package includes the following units:

UNIT-1
Energy and Steam
Forms, Sources and Classification of energy. Utilization of energy with simple block diagrams. Steam formation. Types of steam. Steam properties – Specific Volume, Enthalpy and Internal energy. (simple numerical problems) Steam boilers – classification, Lancashire boiler, Babcock and Wilcox boiler, Boiler mountings, Accessories, their locations and applications. (No sketches for mountings and accessories)

UNIT-2
Turbines
Steam turbines 
– Classification, Principle of operation of Impulse and reaction. Delaval’s turbine, Parson’s turbine. Compounding of Impulse turbines. Gas turbines – Classification, Working principles and Operations of Open cycle and Closed cycle gas turbines. Water turbines –Classification, Principles and operations of Pelton wheel, Francis turbine and Kaplan turbine

UNIT-3
Internal Combustion Engines
Classification, I.C. Engines parts, 2/4 – Stroke Petrol and 4-stroke diesel engines. P-V diagrams of Otto and Diesel cycles. Simple problems on indicated power, Brake power, Indicated thermal efficiency, Brake thermal efficiency, Mechanical efficiency and specific fuel consumption.

UNIT-4
Refrigeration and Air conditioning
Refrigerants, Properties of refrigerants, List of commonly used refrigerants. Refrigeration – Definitions – Refrigerating effect, Ton of Refrigeration, Ice making capacity, COP, Relative COP, Unit of Refrigeration. Principle and working of vapor compression refrigeration and vapor absorption
refrigeration. Principles and applications of air conditioners, Room air conditioner.
                                                            PART – B
UNIT-5
Lathe and Drilling Machines
Lathe
 – Principle of working of a centre lathe. Parts of a lathe. Operations on lathe – Turning, Facing, Knurling, Thread Cutting, Drilling, Taper turning by Tailstock offset method and Compound slide swiveling method, Specification of Lathe.
Drilling Machine – Principle of working and classification of drilling machines. bench drilling Machine, Radial drilling machine. Operations on drilling machine -Drilling, Boring, Reaming, Tapping, Counter sinking, Counter boring and Spot facing. Specification of radial drilling machine.

UNIT-6
Milling and Grinding Machines
Milling Machine
 – Principle of milling, Types of milling machines. Principle & working of horizontal and vertical milling machines. Milling Processes – Plane milling, End milling, Slot milling, Angular milling, Form milling, Straddle milling and Gang milling. Specification of universal milling
machine.
Grinding Machine – Principle and classification of Grinding Machines. Abrasives- Definition, Types and applications. Bonding materials. Type of Grinding machines, Principle and working of surface grinding, Cylindrical grinding and Centerless grinding.

UNIT-7
Joining Processes, Lubrication and Bearings Soldering, Brazing and Welding

Definitions. Classification and method of Soldering, Brazing and welding and differences. Brief description of arc welding and Oxy-Acetylene welding
Lubrication and Bearings Lubricants-Classification and properties. Screwcap, Tell-Tale, Drop feed, Wick feed and Needle lubricators. Ring, Splash and Full pressure lubrication. Classification of bearings, Bushed bearing, Pedestal bearing, Pivot bearing, Collar bearings and Antifriction bearings.
UNIT-8
Power Transmission
Belt Drives
 – Classification and applications, Derivations on length of belt. Definitions – Velocity ratio, Creep and slip, Idler pulley, stepped pulley and fast & loose pulley.
Gears – Definitions, Terminology, Types and uses. Gear drives and Gear Trains – Definitions and classifications, Simple problems.

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