MCQ
21. Gated pattern. Which of the following pattern operation is cheapest?
Sweep pattern
Match plate pattern
Gated pattern
Skeleton pattern
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
23. Which of the following is 'not' an allowance given to the pattern for casting?
Shrinkage
Hole
Draft
Machining
24. Pattern cannot be constructed out of which of the following materials?
Wood
Wax
Metal
Oil
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
27. Casting replica used to make the cavity is called as--
Mould
Cope
Pattern
None of the above
28. The ability of moulding sand to withstand the heat of melt without showing any sign of called as-.
Strength
Refractiveness
Collapsibility
None
29. What should the sulphur level in foam plastic be?
More than 1%
Between 0.5% 1.19%
Less than 0.1%
Between 0.1% to 0.5%
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
31. Which of the following is not a part of the pattern at most times?
Mould cavity
Molten metal
Cope
Core
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
33. Which of the following pattern making machine works on two pulleys?
Circular saw
Band saw
Wood turning lathe
Jig saw
34. Piston rings are produced using which pattern?
Sweep pattern
Match plate pattern
Gated pattern
Loose piece pattern
35. Which pattern operation is used for manufacturing wheel rims?
Gated pattern
Follow board pattern
Sweep pattern
Segmental pattern
36. Which of the following patterns do not withstand rough handling?
Cast iron
Aluminium
Brass
Steel
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
40. Which among the following wood is mast widely used for making patterns?
White Pine
Mahogany
Maple
Teak