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The spoiler improves stability of vehicle at high speed.

Central portion of wheel is called hub.

Crankcase is the bottom covering of engine. It removes vaporized water and fuel.

The phenomenon of escaping burned gases from combustion chamber to crankcase is called blow by. This usually occur due to excess wear of piston or damaged rings.

Compression ring prevent pressure loss in cylinder during compression stroke. It should be heat resistant and low wear and tear.

The piston connect to connecting rod with a pin which is known as piston pin. It is also known as gudgeon pin.

Usually passenger car engine contain 2 compression ring and 1 oil ring only.

Negative charge represents electrons and positive charge represents protons.

The number of protons determines an element’s atomic number (Z) and distinguishes one element from another. For example, carbon’s atomic number (Z) is 6 because it has 6 protons.

Thermistor PTC type (positive temperature coefficient) IE resistance goes up with temperature

Thermistor NTC type (negative temp coefficient) resistance goes down with temperature.

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