Type of file tools || Parts of file || Classification of file , रेती के प्रकार और वर्गीकरण

File tools || parts of File , Types of file, रेती के प्रकार || classification of Files || रेती
types of file according to cut
types of file according to grade
types of file in Hindi
types of file in Hindi
types of file CUT Grade and classification of file
classification of file
reti kitne prakar ka hota hai
reti ke prakar
types of reti
rerti ka vargikaran
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[@santoshpatnaik30]

Sir what is viscosity of oil???

[@studyjobanalysis]

Viscosity is the measure of a fluid's resistance to flow, which is crucial for lubrication in engines. It is defined as the internal friction within an oil that resists its flow, and it is one of the most important physical properties of a lubricant. Viscosity is measured by its resistance to flow, with lower viscosity indicating easier flow and higher viscosity indicating thicker flow. The viscosity of oil varies with temperature changes, with thinner oils flowing better in cold weather and thicker oils maintaining film strength at warmer temperatures. The viscosity index (VI) measures how viscosity changes relative to temperature, with higher VI numbers indicating less change in viscosity with temperature.