Correct option is A
The correct answer is (a) Smooth.
· Lubricants reduce friction between machine parts by forming a thin film, allowing them to move more smoothly.
· By decreasing resistance, lubricants help prevent wear and tear on machine components, extending their operational life.
· Lubricants also reduce the heat generated from friction, contributing to more efficient and cooler machine operation.
Information Booster:
· Types of Lubricants: Common types include oils, greases, and dry lubricants like graphite.
· Functions of Lubricants: Besides reducing friction, they protect against corrosion, dissipate heat, and keep components clean.
· Applications: Lubricants are essential in industries such as automotive, aerospace, and manufacturing, where smooth and efficient machine operation is critical.
· Maintenance: Regular lubrication of machine parts is key to ensuring machinery operates smoothly and avoids potential breakdowns due to frictional wear.