The maximum efficiency of spiral gears is (where $$\theta $$ = Shaft angle and $$\varphi $$ = Friction angle)

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Mr. Dubey • 52.30K Points
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Q. The maximum efficiency of spiral gears is (where $$\theta $$ = Shaft angle and $$\varphi $$ = Friction angle)

(A) sin(θ+φ)+1 cos(θ−φ)+1

(B) cos(θ−φ)+1 sin(θ+φ)+1

(C) cos(θ+φ)+1 cos(θ−φ)+1

(D) cos(θ−φ)+1 cos(θ+φ)+1

Correct : Option (C)

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