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GATE Mechanical Engineering (ME) 2018 Shift 2 Solved Paper

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Question : 65

Total: 65

For sand-casting a steel rectangular plate with dimensions 80mm 120mm 20mm,   a cylindrical riser has to be designed. The height of the riser is equal to its diameter. The total solidification time for the casting is 2 minutes. In Chvorinov’s law for the estimation of the total solidification time, exponent is to be taken as 2. For a solidification time of 3 minutes in the riser, the diameter (in mm) of the riser is __________ (correct to two decimal places).

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