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Efficiency of a screw jack is given by(where α = Helix angle, and φ = Angle of friction.)

/ Engineering Mechanics, Mechanical Engineering / By
Question: Efficiency of a screw jack is given by(where α = Helix angle, and φ = Angle of friction.)
[A].

[B].

[C].

[D].

Answer: Option B

Explanation:

No answer description available for this question.