the maximum efficiency of a screw jack is Options: A . &nbsp (1 - sinφ)/(1 + sinφ) B . &nbsp (1 + sinφ)/(1 - sinφ) C . &nbsp (1 - tanφ)/(1 + tanφ) D . &nbsp (1 + tanφ)/(1 - tanφ)

the maximum efficiency of a screw jack is

Question

The maximum efficiency of a screw jack is

Options:

A . (1 - sinφ)/(1 + sinφ)

B . (1 + sinφ)/(1 - sinφ)

C . (1 - tanφ)/(1 + tanφ)

D . (1 + tanφ)/(1 - tanφ)

Answer: Option A

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