Mechanical Engineering Level-5

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1. Workshop Technology
o Basic Hand Tools and hand operations
o Machine tools: Lathe, Milling, Drilling, Grinding and Shaping machine,
o Metal joining: Soldering, Brazing, Electric are welding, Gas welding and cutting
o Sheet metal & pipe works
2. Thermodynamica
o Energy, Work, Heat and Power
o Properties and States
o Basic thermodynamic processes: constant volume, constant pressure, constant
temperature, adiabatic process and polytropic process
o General Energy Equation
o Gas Laws: Boyle's law, Charle's law & combined gas law
o First law of thermodynamics: definition and mechanical equivalent of heat
o Second law of thermodynamics: definition and thermal efficiency of heat engines
3. Heat Engine
o Different types of heat engine
o Internal Combustion Engine: Working Principle, Engine nomenclature, Spark Ignition
Engine, Compression Ignition Engine, Two-Stroke & Four –Stroke cycle Engine
o Thermodynamic cycles involved in Internal Combustion engine: otto cycle, Diesel
cycle, Dual combustion cycle
4. Machine Drawing
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o
o
Orthographic Projection
Isometric Drawing of machine parts including sections
Drawing of joints: nuts, bolts, riveted joints, welded joints, gears, keys and spline joints
5. Refrigeration & Air Conditioning
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o
o
o
Terminologies
Basic Knowledge of Vapor absorption and Vapor compression cycle
Types of Air conditioning system, Equipments and control components i.e. expansion
devices, thermostat, pressure cutout devices
Types of refrigerant
6. Estimating and Costing
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o
o
o
o
Concept of profitability
Break-even point
Return on investment, Liability, Assets
Fixed cost, variable cost, direct cost, indirect cost
Fixed capital, Working capital, Equity, Depreciation and Amortization.
7. Applied Mechanics
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o
o
o
Coplanar system of intersecting forces, coplanar system of parallel forces
Moment of force, Center of Gravity, Friction
Definition of Speed, Velocity, Acceleration, Distance transversed and their units,
Trajectory of particles, Distance and time

o
o
Rectilinear motion of particles
Fundamental laws of Dynamics, Newton's law of motion, Work, Energy and power,
Mechanical Energy, Relation between RPM, Torque and Power, Law of conservation
of energy
8. Material science and Metrology
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o
Safety rules and regulation, storage and handling of explosives and compressed gases
General properties of materials: Physical properties, Mechanical properties, Electrical
properties, Magnetic properties and Thermal properties
Standard units of measurements and Measuring instruments.
9. Electromechanical Equipments
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o
Basic Knowledge of AC & DC motors
Basic Knowledge of generators
10. Automotive system
o Diesel/Petrol engine and its components, Braking system, Transmission system,
Suspension system, Cooling system, Lubricant System, Steering system, Exhaust system,
Electrical system & Fuel injection System
11. Miscellaneous
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o
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Spare parts management
Basic knowledge of heavy equipments: Loader, \Bulldozer, Grader, Excavator, Roller,
Crane & Forklift
Safety rule and regulations for operation and maintenance of mechanical equipments
and facilities
Model Questions
a) Objective Question
1. Which of the following metals can be welded by gas welding using oxidizing flame?
a) Cast iron b) Brass c) Steel d) Aluminium
b) Short Answer Question
1. What is the main purpose of 'flywheel' in the engine?
c) Long Answer Question
1. Explain the working principle of internal combustion engine?

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