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| Subtopic |
Key Concepts |
Video Focus Areas |
| 1.1 |
Fundamentals of Mechanical
Engineering |
Scope, Branches, Role in
industry, Basic concepts (force, work, power, energy) |
| 1.2 |
Engineering Materials |
Classification - Metals
(ferrous, non-ferrous), Non-metals (polymers, ceramics, composites) |
| 1.3 |
Properties of Materials |
Mechanical properties (strength,
hardness, ductility, toughness, brittleness, elasticity, plasticity, fatigue,
creep) |
| 1.4 |
Thermodynamic Basics |
System, surroundings, boundary,
types of systems, properties, state, process, cycle |
| 1.5 |
Zeroth & First Law of
Thermodynamics |
Concept of temperature, heat,
work, internal energy, first law for closed systems |
| Subtopic |
Key Concepts |
Video Focus Areas |
| 2.1 |
Introduction to Boilers |
Definition, Classification
(Fire-tube vs Water-tube, Natural vs Forced circulation, High vs Low
pressure) |
| 2.2 |
Fire-Tube Boilers |
Construction and working:
Cochran boiler, Lancashire boiler, Locomotive boiler |
| 2.3 |
Water-Tube Boilers |
Construction and working:
Babcock and Wilcox boiler, Stirling boiler, Benson boiler |
| 2.4 |
Boiler Mountings |
Functions and working of: Water
level indicator, Pressure gauge, Safety valve, Fusible plug, Steam stop
valve, Feed check valve, Blow-off cock |
| 2.5 |
Boiler Accessories |
Functions and working of:
Economizer, Superheater, Air preheater, Feed pump, Injector |
| 2.6 |
Boiler Performance |
Evaporative capacity, Boiler
efficiency, Equivalent evaporation, Heat balance |
| Subtopic |
Key Concepts |
Video Focus Areas |
| 3.1 |
Introduction to IC Engines |
Classification (Petrol vs
Diesel, 2-stroke vs 4-stroke, Spark-Ignition vs Compression-Ignition) |
| 3.2 |
Construction Details |
Major components: Cylinder,
Piston, Connecting rod, Crankshaft, Cylinder head, Valves, Spark plug, Fuel
injector |
| 3.3 |
4-Stroke Petrol Engine |
Working principle: Suction,
Compression, Power, Exhaust strokes - Valve timing diagram |
| 3.4 |
4-Stroke Diesel Engine |
Working principle: Suction,
Compression, Power, Exhaust strokes - Comparison with petrol engine |
| 3.5 |
2-Stroke Petrol Engine |
Working principle, Port timing
diagram, Differences from 4-stroke |
| 3.6 |
2-Stroke Diesel Engine |
Working principle, Applications |
| 3.7 |
Engine Performance Parameters |
Indicated power, Brake power,
Frictional power, Mechanical efficiency, Thermal efficiency (indicated and
brake), Specific fuel consumption |
| 3.8 |
Brake Thermal Efficiency |
Determination and calculation,
Factors affecting efficiency |
| Subtopic |
Key Concepts |
Video Focus Areas |
| 4.1 |
Introduction to Compressors |
Purpose, Classification
(Positive displacement vs Dynamic, Reciprocating vs Rotary) |
| 4.2 |
Reciprocating Compressor |
Construction, Working principle,
Single-stage vs Multi-stage, P-V diagram |
| 4.3 |
Rotary Compressors |
Centrifugal compressor, Axial
compressor, Roots blower, Vane type - Construction and working |
| 4.4 |
Performance of Compressors |
Work done, Isothermal
efficiency, Volumetric efficiency, FAD (Free Air Delivery) |
| 4.5 |
Applications |
Use in industry, Pneumatic
tools, Refrigeration, Gas turbine systems |
| Subtopic |
Key Concepts |
Video Focus Areas |
| 5.1 |
Introduction to Refrigeration |
Definition, Unit of
refrigeration (Ton of Refrigeration), Coefficient of Performance (COP) |
| 5.2 |
Vapor Compression Refrigeration
Cycle |
Components: Compressor,
Condenser, Expansion valve, Evaporator - Working, P-h chart, T-s diagram |
| 5.3 |
Domestic Refrigerator |
Construction, Working,
Thermostat control, Defrosting |
| 5.4 |
Air Conditioning |
Introduction, Types (Window,
Split, Central) - Construction and working |
| 5.5 |
Window Air Conditioner |
Components, Working cycle,
Cooling/heating modes |
| 5.6 |
Split Air Conditioner |
Indoor and outdoor units,
Working, Advantages |
| 5.7 |
Psychrometric Terms |
Dry bulb temperature, Wet bulb
temperature, Relative humidity, Dew point |
| 5.8 |
Applications |
Food preservation, HVAC,
Industrial cooling |
| Subtopic |
Key Concepts |
Video Focus Areas |
| 6.1 |
Introduction to Power
Transmission |
Need, Types (Belt drive, Chain
drive, Gear drive, Rope drive) |
| 6.2 |
Belt Drives |
Types (Flat belt, V-belt, Timing
belt), Materials, Velocity ratio, Slip, Creep |
| 6.3 |
Chain Drives |
Construction, Types (Roller
chain, Silent chain), Applications (bicycles, conveyors) |
| 6.4 |
Gear Drives |
Classification (Spur, Helical,
Bevel, Worm, Rack and pinion), Gear terminology, Velocity ratio |
| 6.5 |
Rope Drives |
Construction, Applications
(cranes, elevators) |
| 6.6 |
Selection of Drives |
Factors affecting selection,
Advantages/disadvantages of each type |
| Subtopic |
Key Concepts |
Video Focus Areas |
| 7.1 |
Clutches |
Purpose, Types (Friction clutch,
Single-plate, Multi-plate, Centrifugal) - Construction and working |
| 7.2 |
Brakes |
Purpose, Types (Mechanical,
Hydraulic, Pneumatic, Electrical) - Disc brakes, Drum brakes, Band brakes |
| 7.3 |
Couplings |
Purpose, Types (Rigid, Flexible,
Universal joint, Oldham coupling) - Construction and application |
| 7.4 |
Bearings |
Purpose, Classification (Sliding
contact vs Rolling contact, Radial vs Thrust) - Ball, Roller, Journal
bearings |
| 7.5 |
Lubrication |
Purpose, Types (Hydrodynamic,
Hydrostatic, Boundary), Lubricants and their selection |