Project ForgeManufacturing Engineering
Machining Processes
GATE 2021
Medium
In a grinding operation, specific energy consumption is 15 J/mm³. A grinding wheel of diameter 200mm rotates at 3000 rpm to obtain a material removal rate of 6000 mm³/min. The tangential force on the wheel is ___ N (round off to two decimal places).
47.75 N(± 3 accepted)
Explanation
MRR=6000mm³/min=100mm³/s. Power=u×MRR=15×100=1500W. Wheel surface speed V=πDN/60=π×0.2×3000/60≈31.42 m/s. Ft=Power/V=1500/31.42≈47.75 N.
Source: GATE ME 2021 Session 1 (ME-1) (2021)
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