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This question belongs to Mechanical Engineering Machine Design

Machine Design

?

The velocity factor for precision metallic gears cut with high accuracy and operating at velocities up to 20 m/s is equal to

A) $$\frac{{0.75}}{{0.75 + \sqrt {\text{v}} }}$$ B) $$\frac{3}{{3 + {\text{v}}}}$$ C) $$\frac{{4.5}}{{4.5 + {\text{v}}}}$$ D) $$\frac{6}{{6 + {\text{v}}}}$$

Answer & Solution

Correct Answer: Option A

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3 Comments

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Vinay Singh 6 years ago

4.5/4.5+ v for careful cutting of gear and it's velocity up to 12.5 m/s.
6/6+v for accurate and velocity 20 m/s 0.75/0.75+v for precision and velocity up to 20 m/s (0.75/1+v )+ 0.25 for non metal gears.

KAUSHAL KUMAR 6 years ago

Velocity factor.

3/(3+v): v

Madhavan Palmani 7 years ago

For mettalic D is the Correct answer.
No metallica option a is correct

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