Unconventional Machine Process Set 26

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This set of Unconventional Machine Process (UMP) Multiple Choice Questions & Answers (MCQs) focuses on Unconventional Machine Process Set 26

Q1 | Which of the following materials combine to form the magnetic abrasive brush in MAF?
  • work piece
  • magnetic and abrasive particles
  • magnets
  • all of the mentioned
Q2 | In order to achieve uniform circulation of abrasives, the magnetic abrasives are undergone through which of the following?
  • stirring
  • oscillation
  • vibration
  • all of the mentioned
Q3 | Magnetic lines of force flows on which part of the work piece material?
  • through the work piece
  • over the surface
  • above the work piece
  • below the work piece
Q4 | What is the limit of the roller speed used in MAF?
  • up to 0.5 m/s
  • up to 1.3 m/s
  • up to 2.6 m/s
  • up to 3.3 m/s
Q5 | In which direction, oscillatory motion of magnets are carried out?
  • axial to work piece
  • perpendicular to work piece
  • inclined to work piece
  • none of the mentioned
Q6 | Which of the following surface defects are removed using Magnetic abrasive finishing?
  • scratches
  • hard spots
  • lay lines and tool marks
  • all of the mentioned
Q7 | What is the value of the limited depth to which form errors, tapers, looping can be corrected?
  • 10 microns
  • 20 microns
  • 30 microns
  • 40 microns
Q8 | State whether the following statement is true or false about magnetic abrasive finishing. “Increasing the magnetic flux density raises the rate of material removal in finishing.”
  • true
  • false
Q9 | Which of the following factors, does material removal rate depend on?
  • magnetic flux density
  • working clearance
  • work piece material
  • all of the mentioned
Q10 | Which of the following factors does not affect the magnetic abrasive conglomerates in MAF?
  • abrasive type
  • abrasive size
  • work piece material
  • volume fraction
Q11 | State whether the following statement is true or false about Magnetic abrasive finishing. “Higher rates of material removal are obtained, with an increase in amplitude and frequency.”
  • true
  • false
Q12 | Which of the following applications where MAF is used?
  • finishing of inner surfaces
  • polishing of balls and rollers
  • chamfering and deburring of gears
  • all of the mentioned
Q13 | Diamond abrasives used for finishing operation results in which type of surface defects?
  • deep pits
  • surface scratches
  • micro cracks
  • all of the mentioned
Q14 | Which of the following conditions is/are not suitable for finishing of ceramic balls?
  • controlled force
  • large abrasive sizes
  • small abrasive sizes
  • less harder abrasives
Q15 | In MAF, ceramic balls and the bearing rollers are placed in between which components?
  • abrasives and float
  • drive shaft and float
  • float and magnets
  • magnets and abrasives
Q16 | Polishing in Magnetic abrasive finishing is done, by which action of material removal?
  • mechanical abrasion
  • mechanical erosion
  • chemical corrosion
  • material vaporization
Q17 | For obtaining a better finish using Magnetic abrasive finishing, tubes are rotated at which speeds?
  • very low
  • low
  • medium
  • very high
Q18 | Which of the following is an advantage of MAF over Electrolytic finishing?
  • disposing of electrolyte
  • cost effective
  • more flexible
  • more accuracy
Q19 | State whether the following statement is true or false about Magnetic abrasive finishing. “Mirror finishing, removed burrs with lowering the accuracy of the shape are achieved by MAF.”
  • true
  • false
Q20 | What are the other applications where Magnetic abrasive finishing can be used?
  • removal of oxide layers
  • removal of protective coatings
  • chamfering
  • all of the mentioned