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BALL PEEN HAMMER

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HEAD LIGHT CIRCUIT - WITHOUT RELAY

  AIM: HEAD LIGHT CIRCUIT WITHOUT RELAY TOOLS & MATERIALS REQUIRED: 1. Screw driver 2. Combination plier 3. Wire striper 4. Copper leg 5. Insulation tape 6. Head light switch 7. Dipper switch 8. Battery clips 9. Battery -12v 10. Head lamp - 12v DIAGRAM PROCEDURE: 1. ബാറ്ററിയിൽ നിന്നുള്ള +ve terminal head light സ്വിച്ചിലേക്ക് fuse വഴി connect ചെയ്യുക. 2. Head light switch ൽ നിന്നുള്ള out, dipper switch ന്റെ center point ലേക്ക് connect ചെയ്യുക. 3. Dipper switch ൽ നിന്നുള്ള dim, bright വയറുകൾ head lamp ലെ low, high beam വയറുമായി യഥാക്രമം connect ചെയ്യുക. 4. Head lamp ൽ നിന്നുള്ള -ve വയർ, ബാറ്ററിയുടെ -ve terminal ലുമായി connect ചെയ്യുക. RESULT : Head light circuit - without relay വിജയകരമായി പൂർത്തീകരിച്ചു
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INTRODUCTION TO ENGINE

Engine : It acts as the power unit. The internal combustion engine is the most commonly used in automobiles. It is of two types ; (i) Spark ignition (ii) Compression ignition.         Both engines are called heat engines. A steam engine is an external combustion engine because the fuel is burned outside the engine. The principle of working of an external combustion engine is shown in the figure below. COMPARISON BETWEEN INTERNAL AND EXTERNAL COMBUSTION ENGINES      The internal combustion engine is an engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber. In an internal combustion engine the expansion of the high temperature and pressure gases, which are produced by the combustion, directly applies force to a movable component of the engine, such as the pistons and by moving it over a distance, generate useful mechanical energy.          The internal combustion engine...
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FOUR STROKE SPARK IGNITION (PETROL) ENGINE

FOUR STROKE PETROL ENGINE MAIN PARTS 1. PISTON 2. CYLINDER 3. CONNECTING ROD 4. INLET VALVE 5. EXHAUST VALVE 6. SPARK PLUG 7. CRANK SHAFT 8. FLY WHEEL 9. CAM SHAFT CONSTRUCTION A four stroke petrol engine have a piston, connecting rod, crank shaft, inlet valve, exhaust valve and a spark plug. The connecting rod is used to connect the piston and crank shaft. The spark plug and valves are mounted in the cylinder head. Also the valves are operated by cam shaft which is connected to the crank. In this type of engines, there would be a power stroke for every two rotations of crank shaft. It is also known as otto cycle. Each full rotation of crank having two strokes. So one stroke is  180° rotation of flywheel. A four stroke petrol engine having the following strokes. WORKING Induction stroke : The crankshaft moves the piston downwards (TDC to BDC). The inlet valve is open and a mixture of fuel and air is sucked into the combustion chamber. It is also known suction stroke. In this strok...
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