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GATE 2023 II Casting II Quiz 62

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Question 1

Which of the following is used for making small holes in moulds for escape of gases _________.

Question 2

A steel casting is made with the help of aluminum pattern and aluminum pattern is made up of wooden pattern. The dimensions of steel block required are 100 × 150 × 80 mm3 and pattern allowance of steel is 20mm in every meter of length and that of aluminum is 13mm in every meter of length. Then the height of wooden pattern required is _______mm. (correct up to 2 decimal places)

Question 3

Defects occur in castings due various factors, out of which defects caused due to mould and core making techniques are;
1) Fins
2) Shifts
3) Swell
4) Blowholes

Question 4

Two castings of the same metal have the same surface area. One castings is in the form of a sphere and the other is a cube. What is the ratio of the solidification time for the sphere to that of the cube?

Question 5

Directional solidification can be ensured by _________.

Question 6

Sand acquires a predetermined shape under pressure and retains the same when pressure is removed. This is due to the property of sand known as:
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