In the case of un-reactive contacting surfaces, the fatty acids adheres by chemical reaction during lubrication.(a) True(b) FalseI have been asked this question during an online interview.Question is taken from Friction and Lubrication in Metal Forming topic in section Types of Die & Metal Forming Processes of Casting-Forming-Welding II

In the case of un-reactive contacting surfaces, the fatty acids adhere

1.	In the case of un-reactive contacting surfaces, the fatty acids adheres by chemical reaction during lubrication.(a) True(b) FalseI have been asked this question during an online interview.Question is taken from Friction and Lubrication in Metal Forming topic in section Types of Die & Metal Forming Processes of Casting-Forming-Welding II
Answer» Right option is (b) False Easiest explanation: In lubrication, the hydrocarbon layers are meant to REDUCE the friction and wear under loading conditions. In the case of un-reactive contacting SURFACES, the FATTY acids only adhere by physical adsorption. For the reactive METAL surfaces, the mechanism of chemical adsorption is LIKELY to occur, which combines both the physical and chemical adsorption.

Discussion

No Comment Found

Related InterviewSolutions

Precision forging is a type of forging operation in which the metal stocks and dies are controlled very tightly.(a) True(b) FalseThe question was posed to me during an online interview.The question is from Forging topic in section Types of Die & Metal Forming Processes of Casting-Forming-Welding II
It is not possible to use cutting dies for the metal drawing operations.(a) True(b) FalseThis question was posed to me in a job interview.Enquiry is from Types of Sheet Metal Die in chapter Types of Die & Metal Forming Processes of Casting-Forming-Welding II
Tensile strength of a material is the ability of a material to resist the lateral load without failure.(a) True(b) FalseThe question was asked in an online quiz.The question is from Relationship between Tensile and Shear Yield Stress in portion Types of Die & Metal Forming Processes of Casting-Forming-Welding II
Which of the following methods of forming is not the part of electromagnetic forming?(a) Compression(b) Expansion(c) Shearing(d) Counter formingI got this question in semester exam.I want to ask this question from Electromagnetic Forming in section Types of Die & Metal Forming Processes of Casting-Forming-Welding II
In plastic deformation of metal, the deformation is temporary and can regain its original shape.(a) True(b) FalseThe question was asked in homework.My query is from Plastic Deformation and Yield Criteria topic in division Types of Die & Metal Forming Processes of Casting-Forming-Welding II
The joints made by an electromagnetic forming process are much stronger than the parent material.(a) True(b) FalseThe question was posed to me during an interview for a job.The question is from Electromagnetic Forming in chapter Types of Die & Metal Forming Processes of Casting-Forming-Welding II
In electromagnetic forming, highly intense magnetic field is used for the forming process.(a) True(b) FalseI got this question in a job interview.Origin of the question is Electromagnetic Forming topic in chapter Types of Die & Metal Forming Processes of Casting-Forming-Welding II
In the hot working of materials, porosity may increase in the material rather than decrease.(a) True(b) FalseThe question was posed to me in an online interview.Query is from Advantage and Disadvantage of Hot and Cold Forming topic in section Types of Die & Metal Forming Processes of Casting-Forming-Welding II
In the yield criteria of metal, von-mises criteria are also known as distortion energy theory.(a) True(b) FalseThis question was posed to me during a job interview.The question is from Plastic Deformation and Yield Criteria in section Types of Die & Metal Forming Processes of Casting-Forming-Welding II
In general, the casted metal part is much stronger and tougher than that produced by the forging operation.(a) True(b) FalseI have been asked this question at a job interview.Question is from Forging in section Types of Die & Metal Forming Processes of Casting-Forming-Welding II

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment