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MCQ
22. Which of the following factors affect the choice of a pattern at most times?
Size and complexity of the casting
Characteristics of castings
Type of molding and castings method to be used
Type of cooling rates to be provided
25. Runners, gates and risers are attached to the pattern to-
Provide ease of cooling
Provide feed to the molten material
Provide design to the casting
Enhance the finishing of the casting
26. Which of the following is not a criteria for selecting pattern materials?
Method of moulding
Establishment of parting line
Chances of repeat orders
Complexity of the casting
30. Which of the following statement is true?
Casting is the replica of the object to be cast
Pattern is the replica of the casting object
Casting and the pattern are same things
Molten material is cassed into the casting cavity
32. Which of the following factor is not considered while selecting a kind of pattern?
Quantity of casting
Types of moulding method
Shape of the casting
Nature of moulding process
37. Which of the following is not a criteria for selecting pattern materials?
Method of moulding
Establishment of parting fine
Chances of repeat orders
Complexity of the casting
38. The life of a pattern is most likely to depend upon which of the following term?
Number of castings produced
Size of the casting
Size of the pattern
Type of cooling rate of the casting
39. The function of a gated pattern is-
To produce small castings in mass production
To create castings of a very heavy mass
To create castings containing complex design
To create symmetrical castings