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GATE 2022 ME: Production Engineering Quiz - 1

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Question 1

A spherical drop of molten metal of radius 2 mm was found to solidify in 10 s. A similar drop of radius 8 mm would solidify in

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

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 4

Directional solidification can be ensured by _________.

Question 5

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:

Question 6

Green sand mould indicates that________.
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