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Define the Ideal Surface Roughness
The ideal surface roughness represents the best possible finish which may be obtained for a given tool shape and can only be approached if built up edge, chatter ,inaccuracies, in machine tool movement etc. are eliminated.
Figure: Ideal Surface finishes for Turning
Ideal surface finish for the turning operation where a sharp corner tool is used is shown in Figure.
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A single jet pelton wheel runs at 300 rpm under a head of 510 m. the jet diameter is 200m, its deflection inside the bucket is 165 o and its relative velocity is reduced by 15% be
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