Efficiency of a screw jack is given by (where $$\alpha $$ = Helix angle and $$\varphi $$ = Angle of friction.)?

$$\frac{{\tan \left( {\alpha + \varphi } \right)}}{{\tan \alpha }}$$
$$\frac{{\tan \alpha }}{{\tan \left( {\alpha + \varphi } \right)}}$$
$$\frac{{\tan \left( {\alpha - \varphi } \right)}}{{\tan \alpha }}$$
None of these

LohaHridoy

5 views

2025-01-04 04:42

1 Answers

AhmedNazir

Answer: Option 2

Let'

5 views Answered 2022-09-01 13:21

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