Physics · Friction and Lubrication
A lubricating oil is mainly required to run a machine ______.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1at an extremely high speed
- 2with increased friction between joints
- 3to maintain complete dryness
- 4smoothly and with reduced noise and friction✓
Correct answer
smoothly and with reduced noise and friction
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