The efficiency of a screw jack is maximum, when (where $$\alpha $$ = Helix angle and $$\varphi $$ = Angle of friction.)?

$$\alpha = {45^ \circ } + \frac{\varphi }{2}$$
$$\alpha = {45^ \circ } - \frac{\varphi }{2}$$
$$\alpha = {90^ \circ } + \varphi $$
$$\alpha = {90^ \circ } - \varphi $$

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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