Foundry Metallurgy MCQ Questions and Answers | Metallurgical Engineering Page-5 section-1

41.
Two square shaped steel plates A and B have thickness of 4 and 8 cms respectively. They are sand cast under identical conditions. Plate A takes 10 minutes to solidify. Plate B would solidify in . . . . . . . . minutes.

A. 16

B. 20

C. 30

D. 40

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42.
The operation not associated with casting is

A. Gating

B. Fettling

C. Stack moulding

D. Calendaring

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43.
A vertical tapered sprue of 16 cms length is, kept full during pouring. To just avoid any aspiration, the cross-sectional areas at the centre and the bottom of the sprue must be in the ratio of

A. 1 : 1

B. √2 : 1

C. 2 : 1

D. 4 : 1

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44.
In hot chamber method of die casting . . . . . . . .

A. Only low melting point metals can be cast

B. High melting point metals can be cast

C. Die is kept hot by electrical heating

D. Die is kept cold by circulating water

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45.
The process of formation of new stable tiny particle of product phase in the parent phase during phase transformation process.

A. Solidification

B. Nucleation

C. Growth

D. All of these

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46.
The machining allowances for medium section cast steel

A. 3 mm

B. 4.5 mm

C. 8 mm

D. 12 mm

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47.
A cope and drag pattern is another form of

A. Single piece pattern

B. Sweep pattern

C. Split pattern

D. Segmental pattern

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48.
In which of the following methods, close fitting cores are pushed in the cavities?

A. Permanent mould casting

B. Semi-permanent mould casting

C. Slush casting

D. Pressed casting

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49.
Ferrous alloys are usually cast by . . . . . . . .

A. Hot chamber machine

B. Cold chamber machine

C. Die casting machine

D. None of the above

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50.
Draft allowance given to patterns is for

A. compensating the liquid state shrinkage

B. easy removal of pattern from the mould cavity

C. providing support for the core placement

D. compensating the solidification shrinkage

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Foundry Metallurgy MCQ Questions and Answers | Metallurgical Engineering

41. Two square shaped steel plates A and B have thickness of 4 and 8 cms respectively. They are sand cast under identical conditions. Plate A takes 10 minutes to solidify. Plate B would solidify in . . . . . . . . minutes.

Answer & Solution

42. The operation not associated with casting is

Answer & Solution

43. A vertical tapered sprue of 16 cms length is, kept full during pouring. To just avoid any aspiration, the cross-sectional areas at the centre and the bottom of the sprue must be in the ratio of

Answer & Solution

44. In hot chamber method of die casting . . . . . . . .

Answer & Solution

45. The process of formation of new stable tiny particle of product phase in the parent phase during phase transformation process.

Answer & Solution

46. The machining allowances for medium section cast steel

Answer & Solution

47. A cope and drag pattern is another form of

Answer & Solution

48. In which of the following methods, close fitting cores are pushed in the cavities?

Answer & Solution

49. Ferrous alloys are usually cast by . . . . . . . .

Answer & Solution

50. Draft allowance given to patterns is for

Answer & Solution

41.
Two square shaped steel plates A and B have thickness of 4 and 8 cms respectively. They are sand cast under identical conditions. Plate A takes 10 minutes to solidify. Plate B would solidify in . . . . . . . . minutes.

42.
The operation not associated with casting is

43.
A vertical tapered sprue of 16 cms length is, kept full during pouring. To just avoid any aspiration, the cross-sectional areas at the centre and the bottom of the sprue must be in the ratio of

44.
In hot chamber method of die casting . . . . . . . .

45.
The process of formation of new stable tiny particle of product phase in the parent phase during phase transformation process.

46.
The machining allowances for medium section cast steel

47.
A cope and drag pattern is another form of

48.
In which of the following methods, close fitting cores are pushed in the cavities?

49.
Ferrous alloys are usually cast by . . . . . . . .

50.
Draft allowance given to patterns is for