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Which of the following factors affect the choice of a pattern at most times?

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Which of the following factors affect the choice of a pattern at most times?

(a) Size and complexity of the casting

(b) Characteristics of castings

(c) Type of molding and castings method to be used

(d) Type of cooling rates to be provided

I had been asked this question in an online quiz.

This intriguing question originated from Functions of a Pattern in division Pattern and Pattern Making of Casting-Forming-Welding I

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The correct answer is (d) Type of cooling rates to be provided

To explain: The type of cooling rates depends upon the required strength in the casting, which cannot be controlled by the type of any pattern. Proper chills are to be used for that purpose.

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