Metallurgical Engineering
GATE MT format:nat PYQs
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Questions 231–232 of 232. Imported answers require independent review unless marked reviewed.
Question 53
Open questionMTNAT2 marksNeeds review
Total time for solidification of a cubic casting of dimensions 5.0 cm × 5.0 cm × 5.0 cm is 1.6 min. A cylindrical riser with diameter to height ratio 0.5 is required so that the time for solidification of riser is 3.2 min. Applying Chvorinov’s rule, the height of the riser (in cm) is ________ (answer up to two decimal places)
(Assume that exponent (n) in Chvorinov’s equation is 2)
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Open questionMTNAT2 marksNeeds review
A 250 mm thick slab of a nickel alloy is subjected to cold rolling using a roll of diameter 450 mm. If the angle of bite during rolling is 10°, the maximum possible reduction (in mm) during rolling is ________ (answer up to two decimal places)
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