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FAQs on Hand Written Notes: IC Engine Basics - Thermodynamics - Mechanical Engineering

1. What are the main components of an internal combustion engine?
Ans. The main components of an internal combustion engine include the cylinder, piston, crankshaft, camshaft, valves, spark plug, fuel injector, and connecting rods.
2. How does an internal combustion engine work?
Ans. An internal combustion engine works by burning fuel inside a combustion chamber to generate power. The fuel-air mixture is ignited by a spark plug, causing the piston to move and drive the crankshaft, ultimately turning the wheels of the vehicle.
3. What are the differences between a two-stroke and a four-stroke engine?
Ans. A two-stroke engine completes the combustion cycle in two strokes of the piston (up and down), while a four-stroke engine completes it in four strokes (intake, compression, power, exhaust). Two-stroke engines are simpler but less efficient than four-stroke engines.
4. How is engine displacement calculated?
Ans. Engine displacement is calculated by multiplying the cross-sectional area of the cylinder (πr²) by the stroke length (distance the piston travels from top dead center to bottom dead center) and the number of cylinders in the engine.
5. What are the advantages and disadvantages of using an internal combustion engine?
Ans. Some advantages of internal combustion engines include high power output, relatively low cost, and widespread availability of fuel. Disadvantages include pollution, noise, and lower efficiency compared to electric motors.
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