Slotting machine whose engine power is N = 480 W, for t = 5 min cuts a groove depth of h = 18 mm and a length l = 100 mm. Determine the efficiency of the machine drive (the ratio of the cutting operation to the energy consumed by the machine), if: 1) the depth of the groove in one pass of the cutter equal to l is 0.5 mm; 2) the cutting force is Fp = 1 kN.
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