GATE Papers >> Mechanical >> 2020 >> Question No 155

Question No. 155 Mechanical | GATE 2020

Bars of 250 mm length and 25 mm diameter are to be turned on a lathe with a feed of 0.2 mm/rev. Each regrinding of the tool costs Rs. 20. The time required for each tool change is 1 min. Tool life equation is given as VT0.2 = 24 (where cutting speed V is in m/min and tool life T is in min). The optimum tool cost per piece for maximum production rate is Rs. _____________ ( round off to 2 decimal places ).


Answer : 26.00 to 28.00


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