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If surface hardness for a par of bevel gears is 400BHN, then material constant is

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in Machine Design by (89.5k points)
If surface hardness for a par of bevel gears is 400BHN, then material constant is

(a) 3N/mm²

(b) 2.56N/mm²

(c) 0.98N/mm²

(d) 1.44N/mm²

I was tested on this in model questions.

This theoretical question is from the Strength of Bevel Gears section in unit Bevel Gears, Worm Gears and FlyWheel of Machine Design

1 Answer

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by (52.6k points)
The appropriate answer is (b) 2.56N/mm²

Unravel the mysteries with: K=0.16x[BHN/100]².

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