IESL Part II Mechanical

IESL Qualifying Examination Part II - Mechanical Engineering (Institution of Engineers, Sri Lanka)

Manufacturing TechnologyEnglish
Exam overview

Practice session

According to Chvorinov's Rule, the solidification time of a casting is proportional to the square of its volume-to-surface-area ratio. If a spherical casting of diameter 100 mm solidifies in 5 minutes, how long will it take for a spherical casting of diameter 200 mm of the same metal to solidify under identical conditions?

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