Q:

What is the function of cores in the casting process?

A) To support the pattern B) To provide differential cooling rates at specific portions
C) To make holes and cavities D) For ease of flow of the molten material
 
Answer & Explanation Answer: C) To make holes and cavities

Explanation: Cores are the elements used to provide hollow cavities and holes in the pattern which are difficult or non profitable to be given after the casting is done by machining.

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146
Q:

The life of a pattern is most likely to depend upon which of the following term?

A) Number of castings produced B) Type of cooling rate of the casting
C) Size of the casting D) Size of the pattern
 
Answer & Explanation Answer: A) Number of castings produced

Explanation: Obviously, the more casting produced means more exposure of the pattern to the elevated temperature of molten metals and hence, slowly causing distortion to the sand grains as well as the pattern material.

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317
Q:

The quality of the final product is not dependent on _______________

A) Method of withdrawal of pattern B) Allowance provided to the pattern
C) The complexity of the casting D) The metal used in Casting
 
Answer & Explanation Answer: D) The metal used in Casting

Explanation: Metal used in casting is a concern till its viscosity affect the flow or occupation to the cavity. This does not affect the final product physically, once the metal has solidified.

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246
Q:

What will be the machining allowance for a bore of a 405mm cast iron object to be casted?

A) 1.0mm B) 2.0mm
C) 3.0mm D) 5.0mm
 
Answer & Explanation Answer: D) 5.0mm

Explanation: Not available for this question

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119
Q:

Which of the following is ?not? an allowance given to the pattern for casting?

A) Shrinkage B) Draft
C) Hole D) Machining
 
Answer & Explanation Answer: C) Hole

Explanation: A hole is made during the machining or finishing of the casting and is not a type of allowance given to the pattern.

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180
Q:

Which of the following carries the mould cavity where the metal is to be poured?

A) Casting B) Pattern
C) Sand D) Core
 
Answer & Explanation Answer: B) Pattern

Explanation: For casting to be made, the pattern is filled with the molten material and then it is allowed to be solidified, using proper cooling rates before it is extracted out.

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199
Q:

Which of the following statement is true?

A) Casting is the replica of the object to be cast B) Pattern is the replica of the casting object
C) Casting and the pattern are same things D) Molten material is casted into the casting cavity
 
Answer & Explanation Answer: B) Pattern is the replica of the casting object

Explanation: Pattern is the replica of the object. Except for the core prints and allowances, the pattern exactly resembles the casting.

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160