1.

What is the velocity ratio of worm gears?

A. (lπ)/d<sub>2</sub>
B. (πd<sub>2</sub>)/l
C. l/(πd<sub>2</sub>)
D. d<sub>2</sub>/(lπ)
Answer» D. d<sub>2</sub>/(l‚âà√¨‚àö√ë)


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