Questions 1.Which of the following substances can be used for
The process of applying a pillow rolling a bath blanket
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The entire process of participatory development can be completed in a) 4 A rolling plan refers to a plan which. Page 3. a) Does not change its target every ...
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8 Video Editing is the process of: Rearranging shots. Manipulating Shots. Applying will keep rolling just in case. A good editor who eill spend the time to ...
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MCQ 6.29. A process that leads to the occurrence of one and only one of several possible observations is called: (a) Random experiment (c) Random variable (c)
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Metal forming processes
Rolling: In this process the workpiece in the form of slab or plate is compressed between two rotating rolls in the thickness direction
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Whole System Process b. Whole system procedure c. Wheel sliding protection d To allow rolling action of the coach b. To prevent Rolling action of the ...
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similar to the productivity of other automatic processes like rolling d. unpredictable. ANS:- A. 11) Which casting process has no size and shape limits? a
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MANUFACTURING TECHNOLOGY
a. lower than the productivity of other automatic processes like rolling This set of Manufacturing Engineering Multiple Choice Questions & Answers (MCQs).
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MULTIPLE CHOICE QUESTIONS FOR PLANNING The entire process of participatory development can be completed in ... 17. A rolling plan refers to a plan which ...
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In flood irrigation the preferred method of applying irrigation water to the comparatively steeper rolling land
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Rolling MCQ [Free PDF] - Objective Question Answer for Rolling Quiz
27 avr 2023 · Rolling is a metal forming process in which compressive forces are exerted by two rolls rotating in opposite direction to reduces the thickness
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Which of the following methods can be used for manufacturing 2 meter long seamless metallic tubes? a)drawing b)Extrusion c)Rolling d)Extrusion and rolling
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Rolling Motion Recommended MCQs - 130 Questions Systems of Particles and Rotational NCERT Exemplar Questions and PDF Questions with answers solutions
What are the 5 types of rolling process?
There are many types of rolling processes, including ring rolling, roll bending, roll forming, profile rolling, and controlled rolling.What is the objective of rolling process?
The main objective of rolling theory is to predict the manner of the plastic deformation. In hot rolling the chief factors influencing the yield stress are the nature of the material, the temperature at which the material is rolled and the strain rate, i.e. the rate of deformation.What are the formulas for rolling process?
The ratio ? = [ a/Lp] = [a/?R. ?t] is used to calculate the moment arm 'a' ? =0.5 for hot rolling and 0.45 for cold rolling. Where P=Load in Newton, a=moment arm in meters and N=speed rollers This gives the power required for deformation of metal only.- Strain rate, flow stress, heat of deformation, roll force and coefficient of heat transfer are all controlled by rolling speed directly. Therefore, rolling speed can be considered as one of the important parameters for rolling [9].
MANUFACTURINGTECHNOLOGY
CASTING
1) The ability of the moulding sand to withstand the heat of melt without showing any sign of s
called as a. strength or cohesiveness b. Refractiveness c. collapsibility d. adhesiveness2) A model of casting, constructed to use for forming a mould in damp sand, is called as
a. sand construction b. pattern c. cover d. none of the above3) Which of the following is not a requirement of a good pattern?
a. It should be light in weight to handle easily b. It should be smooth to make casting surface smooth c. It should have low strength to break it and to remove casting easily d. none of the above4) The patterns which are made in two or more pieces are called as
a. solid patters b. split patterns c. loose piece patterns d. none of the above5) Permeability can be defined as the property of moulding sand
a. to hold sand grains together b. to allow gases to escape easily from the mould c. to withstand the heat of melt without showing any sign of softening d. none of the above6) The sand in its natural or moist state is called as
a. green sand b. loam sand c. dry sand d. none of the above7) What is the highest
possible percentage of clay contents in loam sand? a. 10 b. 20 c. 30 d. 508) Match the following contents of green sand in Group 1 with their approximate per cent in G
1. Silica -------------------------- A. 5 to 10 per cent
2. Clay --------------------------- B. 2 to 5 per cent
3. Bentonite --------------------- C. 8 to 15 per cent
4. Coal dust --------------------- D. 7 to 8 per cent
5. Water -------------------------- E. up to 75 per cent
a. 1-(E), 2-(C), 3-(B), 4-(A), 5-(D) b. 1-(E), 2-(A), 3-(B), 4-(C), 5-(D) c. 1-(C), 2-(D), 3-(B), 4-(A), 5-(E) d. 1-(C), 2-(A), 3-(B), 4-(D), 5-(E)9) Which of the following sentences is/are correct for casting process?
a. Casting process is comparatively costly b. Objects of larges sizes cannot be produced easily by casting process c. The time required for the process of making casting is quite long d. All of the above sentences are correct10) The productivity of casting process is comparatively
a. lower than the productivity of other automatic processes like rolling b. higher than the productivity of other automatic processes like rolling c. similar to the productivity of other automatic processes like rolling d. Unpredictable11) Which casting process has no size and shape limits?
a. Sand casting b. Shell-mould casting c. Plaster-mould casting d. none of the above12) Blow holes in casting are caused by
a. excessive moisture b. low permeability c. excessive fine grains d. all of the above This set of Manufacturing Engineering Multiple Choice Questions & Answers (MCQs) focuses on "Various Casting Process".13. Injection moulding is a type of
a) Die casting b) Centrifugal casting c) Squeeze casting d) Investment casting14. Which of the following problem is not correct about die casting?
a) It has close dimensional accuracy b) Die has good life c) It is very economical for large scale production d) No need for removing the entrapped gases15. Which type of casting is preferred for making hollow pipes and tubes which are
axisymmetric with concentric holes? a) Centrifuging b) True centrifugal casting c) Semi-centrifugal casting d) None of the mentioned16. Which of the following
casting is a combination of casting and forging? a) Die casting b) Centrifugal casting c) Squeeze casting d) Investment casting17. In plaster mould casting the mould is made from
a) CaSO4 b) CaSO3 c) CaSO2 d) None of the mentioned18. In which casting process the sand is mixed with a thermosetting resin to form a
mould? a) Die casting b) Centrifugal casting c) Squeeze casting d) Shell moulding19. The resins used in shell moulding are?
a) Diphenyl aldehyde b) Phenol formaldehyde c) Methyl formaldehyde d) Dimethyl formaldehyde20. Which casting is used to make hollow casting with thin walls?
a) Die casting b) Centrifugal casting c) Slush casting d) Shell moulding21. In investment casting process which of
the following is used for pattern making? a) Ceramics b) Molten wax c) Silica d) Plaster of paris22. Which of the following
are the examples of prec ision casting process? a) Plastic mould casting b) Ceramic mould casting c) Investment casting d) All of the mentioned23. The major defects of casting are
a) gas defects b) shrinkage cavities c) molding material defects d) all of the mentioned24. __________ is a condition existing in a casting caused by the trapping of gas in the
molten metal or by mold gases evolved during the pouring of the casting. a) gas defects b) shrinkage cavities c) molding material defects d) none of the mentioned25.. The causes of gas defects are
a) metal contains gas b) mold is too hot c) poor mold burnout d) all of the mentioned26. ___________ are caused by liquid shrinkage occurring during the solidification of
the casting. a) gas defects b) shrinkage cavities c) molding material defects d) none of the mentioned27. The molding material defects are
a) cut and washes b) metal penetration c) fusion d) all of the mentioned28. A __________ is caused when the metal is unable to fill the mold cavity completely
and thus leaves unfilled cavities. a) cold shut b) mis run c) all of the mentioned d) none of the mentioned29. A ______________ is caused when two streams while meeting in the mold cavity,
do not fuse together properly thus forming a discontinuity in the casting. a) cold shut b) mis run c) all of the mentioned d) none of the mentionedView Answer
30. A casting defect which occurs near the ingates as rough lumps on the surface of a
casting is a) Shift b) Sand wash c) Swell d) None of the mentioned31. A casting defect which occurs due to improper venting of sand is known as
a) Cold shuts b) Blow holes c) Shift d) None of the mentioned32. Scabs are casting defects which
a) result in a mismatch of t he top and bottom parts of a casting b) result near the ingates as rough lumps on the surface of a casting c) occur as rough and irregular projections on the surface of the casting d) none of the mentioned33. If we decrease the freezing range then the fluidity of metal will?
a) Increase b) Decrease c) Will not change d) Will increase then decrease34. According to Chvorinov's rule the solidification time is a function of volume and
surface area and is given by the relationship between volume, area and some exponential power 'n'. Here the value o is a) 1 b) 2 c) 3 d) 435. Which one of the following expands during contraction?
a) Mild steel b) Grey cast iron c) Aluminium d) Copper36. Dissolved gases may be removed from molten metal by
a) Flushing or purging with inert gas b) Melting and pouring the metal in vacuum c) Both of the mentioned d) None of the Mentioned37. Doubling the time in flat mould will increase the thickness of wall skin by what
percentage? a) 31.6% b) 41% c) 73% d) 22%quotesdbs_dbs14.pdfusesText_20[PDF] mcq questions for class 9 maths pdf
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