Podcast
Questions and Answers
What is friction?
What is friction?
- Easy relative movement of surfaces
- Resistance to motion (correct)
- Presence of smooth surfaces
- The absence of hills and valleys on surfaces
Why do lubricants reduce friction?
Why do lubricants reduce friction?
- By creating more hills and valleys on surfaces
- By separating surfaces with irregularities (correct)
- By increasing interlocking surface irregularities
- By increasing the weight of the surfaces
What purpose do lubricants serve, according to the text?
What purpose do lubricants serve, according to the text?
- Increasing strength of materials
- Promoting surface irregularities
- Temperature control (correct)
- Increasing corrosion
Why are friction reduction and wear reduction considered the most important lubricant purposes?
Why are friction reduction and wear reduction considered the most important lubricant purposes?
What causes surfaces to cling or weld together when they rub together?
What causes surfaces to cling or weld together when they rub together?
How do lubricants help with shock absorption?
How do lubricants help with shock absorption?
What happens to the resistance to relative motion when lubricants are added between surfaces?
What happens to the resistance to relative motion when lubricants are added between surfaces?
What is the term used to describe the extra force required when two surfaces rub against each other?
What is the term used to describe the extra force required when two surfaces rub against each other?
How does the use of a lubricant affect the wear of surfaces?
How does the use of a lubricant affect the wear of surfaces?
What role do oils play in preventing corrosion of metal surfaces exposed to air?
What role do oils play in preventing corrosion of metal surfaces exposed to air?
How do lubricants contribute to temperature control in bearings?
How do lubricants contribute to temperature control in bearings?
Which function does a lubricant serve when gear teeth intermeshing experience impacts?
Which function does a lubricant serve when gear teeth intermeshing experience impacts?
What is the purpose of using lubricants to provide sealing between pistons and cylinder walls?
What is the purpose of using lubricants to provide sealing between pistons and cylinder walls?
Which factor can high temperatures in bearings lead to?
Which factor can high temperatures in bearings lead to?
How does the presence of a lubricant affect the surfaces between which it is applied?
How does the presence of a lubricant affect the surfaces between which it is applied?
How do lubricants contribute to reducing wear between surfaces?
How do lubricants contribute to reducing wear between surfaces?
What is the role of lubricants in corrosion reduction?
What is the role of lubricants in corrosion reduction?
Why are lubricants essential for temperature control in bearings?
Why are lubricants essential for temperature control in bearings?
How do lubricants help in shock absorption in cases like gear teeth intermeshing?
How do lubricants help in shock absorption in cases like gear teeth intermeshing?
What happens to surface wear when lubricants are not used between the bearing surfaces?
What happens to surface wear when lubricants are not used between the bearing surfaces?
What can happen to bearing materials under high temperatures?
What can happen to bearing materials under high temperatures?
What function do chemical compounds (additives) serve in lubricants?
What function do chemical compounds (additives) serve in lubricants?
How do lubricants help to prevent the wearing down of high spots on surfaces?
How do lubricants help to prevent the wearing down of high spots on surfaces?
What is the primary reason for the resistance to relative motion between two surfaces?
What is the primary reason for the resistance to relative motion between two surfaces?
What is the main result of the interlocking of surface irregularities?
What is the main result of the interlocking of surface irregularities?
What is the primary function of lubrication in relation to friction?
What is the primary function of lubrication in relation to friction?
What happens to the surfaces when lubricants are added between them?
What happens to the surfaces when lubricants are added between them?
What is the purpose of lubricants besides friction reduction and wear reduction?
What is the purpose of lubricants besides friction reduction and wear reduction?
What is the result of the interlocking of surface irregularities on the force required to move the surfaces?
What is the result of the interlocking of surface irregularities on the force required to move the surfaces?
What is the term used to describe the phenomenon where surfaces cling or weld together?
What is the term used to describe the phenomenon where surfaces cling or weld together?
What is the origin of fixed oils?
What is the origin of fixed oils?
What is a characteristic of synthetic oils?
What is a characteristic of synthetic oils?
Where are the heavy oils drawn off in the fractionating tower?
Where are the heavy oils drawn off in the fractionating tower?
What is a common use of fixed oils?
What is a common use of fixed oils?
What is the most commonly used class of lubricants?
What is the most commonly used class of lubricants?
What is the purpose of using grease in lubrication?
What is the purpose of using grease in lubrication?
What type of lubricant is suitable for high temperature service and is water resistant?
What type of lubricant is suitable for high temperature service and is water resistant?
What is the primary characteristic of semi-solid lubricants or greases?
What is the primary characteristic of semi-solid lubricants or greases?
What type of lubricant is used for heavily loaded machinery that operate at slow speeds?
What type of lubricant is used for heavily loaded machinery that operate at slow speeds?
What is the primary advantage of using grease over liquid lubricants?
What is the primary advantage of using grease over liquid lubricants?
Which property of lubricants is emphasized depending on the particular application?
Which property of lubricants is emphasized depending on the particular application?
Under what conditions are solid lubricants typically suitable for use?
Under what conditions are solid lubricants typically suitable for use?
Which of the following is a source of synthetic oils?
Which of the following is a source of synthetic oils?
What is the primary reason for categorizing lubricants into different classes?
What is the primary reason for categorizing lubricants into different classes?
For what purpose might solid lubricants be used in addition to their thermal properties?
For what purpose might solid lubricants be used in addition to their thermal properties?
Flashcards are hidden until you start studying
