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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