Q 8. The following are the data for two crossed helical gears used for speed reduction :
Gear I : Pitch circle diameter in the plane of rotation 80 mm and helix angle
Gear II : Pitch circle diameter in the plane of rotation 120 mm and helix angle
If the input speed is 1440 rpm, the output speed in rpm is
(A) 1200
(B) 900
(C) 875
(D) 720
Answer: (B)
Explanation:
