A work piece of 100 mm diameter is to be machined at a cutting speed of 100 metres per minute. The rpm of the work piece should be
A)636
B)318
C)100
D)200
E)159

Question

Quizplus · Accepted Answer

The formula to calculate the rpm (revolutions per minute) is given by rpm = (cutting speed * 1000) / (π * diameter), where the cutting speed is in metres per minute and the diameter is in mm. Substituting the given values, rpm = (100*1000) / (3.14*100) = 318.47, which rounds to 318.

A Work Piece of 100 Mm Diameter Is to Be