Q: A cylindrical workpiece of diameter 20mm and rotating at 300 rpm will have a cutting speed of............../300 rpm पर घूर्णन और 20mm व्यास के एक बेलनाकार कार्यखंड की कर्तन गति (कटिंग स्पीड) .............. होगी।
A.
6π m/min
B.
4π m/min
C.
8π m/min
D.
10π m/min
Correct Answer:
Option A -
Explanations:
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