The velocity factor for very accurately cut and ground metallic gears operating at velocities upto __________ are equal to $$\frac{6}{{6 + {\text{v}}}}$$ .
A. 10 m/s
B. 12.5 m/s
C. 15 m/s
D. 20 m/s
Answer: Option D
This Question Belongs to Mechanical Engineering >> Machine Design
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