Unconventional Machine Process Set 25

Mechanical Engineering

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This set of Unconventional Machine Process (UMP) Multiple Choice Questions & Answers (MCQs) focuses on Unconventional Machine Process Set 25

Q1 | How much amount of energy is consumed in Electro chemical machining?
  • very small
  • small
  • medium
  • large
Answer: large
Explaination:
very huge amount of energy is required for ecm, which is nearly 100 times required for turning or drilling of steel.
Q2 | How are material removal rates of ECM, when compared to that of conventional methods?
  • slower
  • faster
  • same
  • none of the mentioned
Answer: slower
Explaination:
in ecm, rates of material removal are slow compared to conventional methods.
Q3 | State whether the following statement is true or false regarding the limitations of ECM. “In ECM, cleaning and oiling of work piece need not be done after machining.”
  • true
  • false
Answer: false
Explaination:
work piece needs to be cleaned and oiled just after the machining is done.
Q4 | Which of the following are the limitations of electro chemical machining?
  • removal of hydrogen
  • handling the electrolyte
  • energy consumption
  • all of the mentioned
Answer: all of the mentioned
Explaination:
removal of hydrogen, handling and containing the electrolyte and energy consumption are some of the limitations of ecm.
Q5 | State whether the following statement is true or false regarding the limitations of ECM. “In electrochemical machining, duplicating the tool is easier.”
  • true
  • false
Answer: false
Explaination:
duplication of tool is difficult in ecm, since it has side machining effects.
Q6 | Electro chemical machining process cannot produce which of the following mentioned below?
  • drilled holes
  • deburred edges
  • sharp edges
  • all of the mentioned
Answer: sharp edges
Explaination:
electro chemical machining cannot produce sharp internal or external edges.
Q7 | Pumping of electrolyte through the narrow gaps causes, which type of forces on tool and work piece?
  • large
  • small
  • negligible
  • no force
Answer: large
Explaination:
electrolyte pumping through the narrow gaps gives rise to a large amount of forces on tool and work pieces
Q8 | In this type of machining, machining forces are controlled by which of the following fields?
  • magnetic field
  • electric field
  • radiative field
  • none of the mentioned
Answer: magnetic field
Explaination:
in this machining, the magnetic field controls all the major forces of machining.
Q9 | Which of the following type of tools, are required for magnetic field assisted polishing?
  • rigid tools
  • expensive tools
  • magnetic tools
  • ultra precession tools
Answer: magnetic tools
Explaination:
magnetic field assisted polishing requires only magnetic machining elements, for the purpose of machining.
Q10 | Which of the following is not a magnetic field assisted machining process?
  • electro-plating process
  • magnetic abrasive finishing
  • magnetic float polishing
  • all of the mentioned
Answer: electro-plating process
Explaination:
there are only two types of magnetic field assisted polishing: magnetic abrasive machining and magnetic float polishing.
Q11 | In the advanced machining processes, what is the full form of MAF?
  • magnet automated finishing
  • magnetic abrasive finishing
  • magnet assisted floating
  • magnetic association for floating
Answer: magnetic abrasive finishing
Explaination:
in advanced machining processes, full form of maf is magnetic abrasive finishing.
Q12 | In Magnetic abrasive finishing, which of the following particles do not contribute to the material removal?
  • abrasive particles
  • magnetic particles
  • non-magnetic particles
  • all of the mentioned
Answer: non-magnetic particles
Explaination:
material is removed by colloidal dispersion of the magnetic particles in abrasive particles.
Q13 | Which of the following motions are opted, in order to carry on with the Magnetic abrasive finishing?
  • rotary motion
  • oscillatory motion
  • vibratory motion
  • all of the mentioned
Answer: all of the mentioned
Explaination:
all the motions mentioned above, are needed for machining parts in maf.
Q14 | Magnetic Abrasive finishing is used for which of the following application/s?
  • surface finishing
  • cutting
  • drilling
  • boring
Answer: surface finishing
Explaination:
magnetic abrasive finishing is a process, which is opted for finishing of parts that are already machined on the other machines.
Q15 | Which is the place, where Magnetic field assisted polishing was invented?
  • the united states of america
  • the united arab emirates
  • union of soviet socialist republics
  • japan
Answer: the united states of america
Explaination:
magnetic field assisted polishing was invented in the united states of america.
Q16 | Which of the following processes cannot be machined using Magnetic abrasive finishing?
  • surface finishing
  • surface polishing
  • hole drilling
  • none of the mentioned
Answer: hole drilling
Explaination:
holes drilling is one of the processes that cannot be done using magnetic abrasive finishing
Q17 | Which of the following components, come under machining system of Magnetic Abrasive finishing?
  • rotatory spindle
  • oscillating magnets
  • holding chuck
  • all of the mentioned
Answer: all of the mentioned
Explaination:
the components, which are mentioned above come under machining system of magnetic abrasive finishing.
Q18 | Which of the following materials can be machined using Magnetic Abrasive finishing?
  • alloy steels
  • ceramic materials
  • iron materials
  • all of the mentioned
Answer: all of the mentioned
Explaination:
magnetic abrasive finishing is a process which is used for different materials, magnetic and nonmagnetic.
Q19 | State whether the following statement is true or false about Magnetic abrasive finishing. “Vibratory motion that is axial, is introduced in the magnetic field by the oscillation of magnetic poles.”
  • true
  • false
Answer: true
Explaination:
axially vibrating motion is required for machining in maf.
Q20 | Which of the following material/s is/are used to hold the abrasives, in MAF?
  • nonmagnetic materials
  • ferro magnetic materials
  • ceramic materials
  • none of the mentioned
Answer: ferro magnetic materials
Explaination:
ferro magnetic materials hold the abrasives in order to remove material through finishing.
Q21 | What is the other name of ferromagnetic material used for holding the abrasives in MAF?
  • magnetic abrasive conglomerate
  • magnetic abrasive holder
  • magnetic abrasive container
  • magnetic abrasive ampule
Answer: magnetic abrasive conglomerate
Explaination:
ferro magnetic material is also called as magnetic abrasive conglomerate.
Q22 | What are the sizes magnetic abrasive conglomerates required in the machining system of MAF?
  • 1 – 10 microns
  • 20 – 50 microns
  • 50 – 100 microns
  • 100 – 200 microns
Answer: 50 – 100 microns
Explaination:
the sizes of magnetic abrasive conglomerates range between 50 – 100 microns.
Q23 | What are the size ranges of the abrasives used in Magnetic abrasive finishing?
  • 0.1 to 1 microns
  • 1 to 10 microns
  • 10 to 100 microns
  • 100 to 1000 microns
Answer: 1 to 10 microns
Explaination:
the size of abrasives used for finishing range between 1 to 10 microns.
Q24 | Which of the following are commonly used magnetic materials in finishing process?
  • iron and iron oxides
  • nickel and cobalt
  • steel and stainless steel
  • all of the mentioned
Answer: all of the mentioned
Explaination:
all the materials mentioned above, are commonly used magnetic materials.
Q25 | Which of the following are commonly used abrasive materials in finishing process of MAF?
  • silicon carbide
  • aluminium oxide
  • cubic boron nitride
  • all of the mentioned
Answer: all of the mentioned
Explaination:
all the materials mentioned above, are used as abrasives in magnetic abrasive finishing process.
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