Introduction to Manufacturing processes & applications MCQs Part 1. This sets of objective questions or MCQs more focuses on Manufacturing processes and their applications (casting, forging, sheet metal working and metal joining processes).
This questions and answers may helps in you competitive exams, placements and all university online exams.
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SET-1:-Introduction to Manufacturing processes & applications
1.Draft on pattern is provided for
A.Allowance for machining
B. Easy removal of pattern
C. Compensation for shrinkage during solidification
D. Compensation for shrinkage after solidification
Ans. B
2.Shrinkage allowance on pattern is provided for
A.Compensation for finishing operation after completion of casting
B. Easy removal of casting
C. Compensation for shrinkage during solidification
D. Compensation for shrinkage after solidification
Ans. C
3.Riser is provided to
A.Check whether mould cavity is completely filled
B. Reduce impurities
C. Store molten metal to compensate for shrinkage during solidification
D. All of these
Ans. A
4.A prototype of a part to be casted which is used to create cavity inside the sand mould is called
A.Pattern
B. Cope
C. Core
D. Sprue
Ans. A
5.Pattern can be made from
A.Wax
B. Plaster of Paris
C. Both (a) and (b)
D. None of the above
Ans. C
6.Core can be made from
A.Wax
B. Plastic
C. Refractory material
D. All of the above
Ans. C
7.The portion of mould which lies between sprue and gate is called
A.Gate
B. Runner
C. Riser
D. Core
Ans. B
8.The portion of mould which lies between mould cavity and runner is called
A.Gate
B. Runner
C. Riser
D. Core
Ans. A
9.The vertical conical portion of mould through which molten metal is poured is called
A.Riser
B. Sprue
C. Runner
D. Gate
Ans. B
10.Arrange the following parts of mould in correct sequence as per path followed by molten metal
A. Cavity
B. Sprue
C. Gate
D. Runner
E. Pouring basin
A.5-3-2-4-A
B. 5-2-4-3-A
C. A-5-2-4-3
D. 5-4-2-3-A
Ans. B
SET-2:-Introduction to Manufacturing processes & applications
11.„Chill‟ is used to
A.Reduce washout of sand during pouring
B. Increase cooling rate
C. Reduce impurities
D. Support core
Ans. B
12.„Chaplet‟ is used to
A.Reduce washout of sand during pouring
B. Increase cooling rate
C. Reduce impurities
D. Support core
Ans. D
13.„Pads‟ are used to
A.Reduce washout of sand during pouring
B. Increase cooling rate
C. Reduce impurities
D. Support core
Ans. D
14. „Skim bob‟ is used to
A.Reduce washout of sand during pouring
B. Increase cooling rate
C. Reduce impurities
D. Support core
Ans. C
15.Draft is provided on sprue to
A.Facilitate removal of casting
B. Reduce aspiration effect
C. Decrease turbulence of molten metal
D. Reduce washout of sand during pouring
Ans. B
16.„Core‟ is used to
A.Reduce aspiration effect
B. To produce hollow castings
C. Reduce impurities
D. Support core
Ans. B
17.During metal pouring, if pressure inside the mould cavity falls below atmospheric
pressure, the outside air will come into mould. This phenomenon is called
A.Aspiration effect
B. Porosity
C. Inhalation
D. None
Ans. A
18.Aspiration effect is caused because of
A.Sudden change in flow direction
B. Straight sprue
C. Sudden change in flow area
D. All
Ans. B
19.An ability of sand to allow to escape entrapped gases is called
A.Aspiration effect
B. Permeability
C. Permittivity
D. Transmissibility
Ans. B
20.Green sand consists of
A.Sand, copper sulphate, water
B.Sand, graphite powder, water
C.Sand, clay, water
D.Sand, refractory powder, water
Ans. C
SET-3:-Introduction to Manufacturing processes & applications
21.Upper part of mould box is
A.Core
B. Cope
C. Drag
D. Cap
Ans. B
22.Lower part of mould box is
A.Base
B. Cope
C. Core
D. None of these
Ans. D
23. Identify the incorrect statements regarding casting process
1. Sand casting is inexpensive process as compared to most of other manufacturing process
2. Surface finish is poor in sand casting as compared to most of other manufacturing process
3. Sand casting cannot be used to create products complicated shapes
4. Gearbox casing manufactured using casting
5. Exact dimensional tolerances can be achieved in sand casting
6. Material wastage in casting is high as compared to most of other manufacturing process
7. Energy consumption in casting is high as compared to most of other manufacturing process
A.1,3,5,6
B. 1,2,4,7
C. 3,5
D. 1,3,4,
Ans. C
24.Solidification time for riser should be
A.Less than that of casting
B. More than that of casting
C. Same as that of casting
D. It doesn‟t matter , It can be same, more or less
Ans. B
25.Molten metal is carried from furnace to mould box by
1.Pouring cup
B. Ladle
C. Sprue
D. None
Ans. B
26.Which of the following helps to escape air inside the mould cavity
1.Permeability of sand
B. Through Riser
C. Vents provided in sand
D. All of the above
Ans. D
27.The place where casting process is being carried out is popularly known
A.Furnace
B. Foundry
C. Workshop
D. Smith‟s Shop
Ans. B
28. Arrange the following operations as per reverse chronological sequence of casting
1. Metal melting and pouring
2. Creation of mould
3. Creation of pattern and core
4. Product Inspection
5. Finishing the product to exact shape
6. Cooling and solidification
A .3-2-1-6-5-4
B. 4-5-6-1-3-2
C. 4-5-6-1-2-3
D. 5-4-6-1-2-3
Ans. C
29. Assertion(A): Riser is always through Reason(R): Through riser allows gases entrapped in mould cavity to escape
A.Statement (A) is true but statement (R) is false
B. Statement (R) is true but statement (A) is false
C. Both statements are true but statement (R)is not correct explanation of statement(A)
D. Both statements are true and statement (R)is correct explanation of statement (A)
Ans. B
30. Assertion(A): Solidification time of riser should be always more than that of casting Reason(R): Riser should be able to supply molten metal till the end of solidification process
A.Statement (A) is true but statement (R) is false
B. Statement (R) is true but statement (A) is false
C. Both statements are true but statement (R)is not correct explanation of statement(A)
D. Both statements are true and statement (R)is correct explanation of statement (A)
Ans. D
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