If α denotes the lead angle and φ, the angle of friction, then the efficiency of the screw is written as

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If α denotes the lead angle and φ, the angle of friction, then the efficiency of the screw is written as

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Greg · Answer 1 · 2022-10-21T08:41:37+0000

The correct answer is (d) tanα/tan (α + φ)

Explanation: Efficiency, η = Ideal effort/Actual effort = tanα/tan (α + φ).

If α denotes the lead angle and φ, the angle of friction, then the efficiency of the screw is written as

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