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Swaraj Engines

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Swaraj Engines Interview Questions and Answers

Updated 5 Feb 2024

Q1. What is engine

Ans.

An engine is a machine that converts fuel into mechanical energy to power a vehicle or other machinery.

  • Engines come in various types, including gasoline, diesel, electric, and hybrid.

  • They work by igniting fuel in a combustion chamber, which creates pressure that moves pistons and turns a crankshaft.

  • The power generated by the engine is used to propel a vehicle or operate machinery.

  • Engines require regular maintenance to ensure optimal performance and longevity.

  • Examples of engin...read more

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Q2. Working principle of engine

Ans.

An engine converts fuel into mechanical energy to power a vehicle or machine.

  • Fuel is ignited in a combustion chamber, creating high-pressure gases that push pistons.

  • The pistons turn a crankshaft, which converts the up-and-down motion into rotational motion.

  • The rotational motion is transferred to the wheels or other machinery to create movement.

  • Different types of engines include gasoline, diesel, electric, and hybrid.

  • Efficiency and power output can be improved through technolo...read more

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Q3. Use of fly wheel

Ans.

A flywheel is a mechanical device used to store rotational energy. It is used in various applications such as engines and power plants.

  • Flywheels are used to maintain a constant speed in machines that experience fluctuations in power supply.

  • They are also used to store energy and release it when needed, such as in hybrid cars.

  • Flywheels can be made of various materials such as steel, aluminum, and carbon fiber.

  • They are commonly used in engines, power plants, and heavy machinery....read more

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Q4. Work of crank shaft

Ans.

The crankshaft converts reciprocating motion into rotational motion.

  • Converts linear motion into rotational motion

  • Transfers power from pistons to drive train

  • Consists of main journals, rod journals, and crankpins

  • Balancing is important to reduce vibration and wear

  • Commonly made of forged steel or cast iron

  • Used in internal combustion engines, steam engines, and pumps

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Q5. How to do Earthing Test?

Ans.

Earthing test is done to ensure proper grounding of electrical equipment and to prevent electrical hazards.

  • Disconnect the equipment from the power source

  • Connect the earth tester to the equipment's earthing point

  • Measure the resistance between the earthing point and the ground

  • Ensure the resistance is within the acceptable range

  • Repeat the test periodically to ensure continued safety

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Q6. Use for Megger to resistance check

Ans.

Megger is used to measure insulation resistance in electrical systems.

  • Megger is a type of insulation tester used to measure the resistance of insulation in electrical systems.

  • It is used to detect any insulation breakdown or leakage in the system.

  • The Megger applies a high voltage to the insulation and measures the resulting current flow.

  • The resistance value is then displayed on the Megger's screen.

  • Megger testing is important for ensuring the safety and reliability of electrica...read more

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Q7. Si and ci engine difference

Ans.

SI engines use spark plugs for ignition, while CI engines use compression for ignition.

  • SI engines have a spark plug to ignite the air-fuel mixture, while CI engines rely on compression to ignite the fuel.

  • SI engines are used in petrol/gasoline vehicles, while CI engines are commonly found in diesel vehicles.

  • SI engines have a higher power-to-weight ratio compared to CI engines.

  • SI engines are more fuel-efficient at low loads, while CI engines are more efficient at high loads.

  • SI ...read more

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Q8. Parts of engine any ten

Ans.

Parts of an engine include cylinder, piston, crankshaft, camshaft, valves, spark plug, fuel injector, connecting rod, flywheel, and timing belt.

  • Cylinder - where combustion takes place

  • Piston - moves up and down in the cylinder

  • Crankshaft - converts linear motion to rotational motion

  • Camshaft - controls the opening and closing of valves

  • Valves - regulate the flow of air and fuel into the cylinder

  • Spark plug - ignites the air-fuel mixture

  • Fuel injector - delivers fuel into the cylind...read more

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