Podcast
Questions and Answers
What causes the weed junction between two surfaces?
What causes the weed junction between two surfaces?
- Interlocking of surface irregularities
- Friction caused by sliding of two materials
- Rolling of a load sphere or cylinder over a flat surface
- Contact of asperities of both upper and lower surfaces (correct)
Which type of friction results in ploughing and interlocking of surface irregularities?
Which type of friction results in ploughing and interlocking of surface irregularities?
- Friction caused by the contact of asperities
- Sliding friction (correct)
- Rolling friction
- Friction caused by the sliding of two materials of different hardness
What is the relative movement of two surfaces in contact with each other called?
What is the relative movement of two surfaces in contact with each other called?
- Contact deformation
- Slide junction
- Weed junction
- Friction (correct)
What gets broken easily due to sliding friction?
What gets broken easily due to sliding friction?
In which type of friction does a load sphere or cylinder roll over a flat surface?
In which type of friction does a load sphere or cylinder roll over a flat surface?
What is the main cause of carrying all the loads between two surfaces?
What is the main cause of carrying all the loads between two surfaces?
What is the main reason for the lower effect of rolling friction compared to sliding friction?
What is the main reason for the lower effect of rolling friction compared to sliding friction?
Which characteristic should a lubricant possess in order to reduce friction between two moving surfaces?
Which characteristic should a lubricant possess in order to reduce friction between two moving surfaces?
Where are solid lubricants commonly used?
Where are solid lubricants commonly used?
What is the main characteristic of graphite, a widely used solid lubricant?
What is the main characteristic of graphite, a widely used solid lubricant?
In which type of friction is the lubricant less important according to the given information?
In which type of friction is the lubricant less important according to the given information?
Which type of lubricant classification includes graphite and molybdenum sulphide?
Which type of lubricant classification includes graphite and molybdenum sulphide?
What type of bond holds the adjacent layers of carbon atoms together in graphite?
What type of bond holds the adjacent layers of carbon atoms together in graphite?
In which condition is the coefficient of sliding friction much larger according to the text?
In which condition is the coefficient of sliding friction much larger according to the text?
What happens if the frictional heat reaches the melting temperature of the material, according to the text?
What happens if the frictional heat reaches the melting temperature of the material, according to the text?
What should be the flash and fire points of a lubricant in comparison to the operating temperature of the machine?
What should be the flash and fire points of a lubricant in comparison to the operating temperature of the machine?
