A worm gear set is designed to have pressure angle of 30° which is eq – McqOptions

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1.	A worm gear set is designed to have pressure angle of 30° which is equal to the helix angle. The efficiency of the worm gear set at an interface friction of 0.05 is
A.	89.1%
B.	77.9%
C.	67.9%
D.	57.9%
Answer» B. 77.9%

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