Physics · Mechanics
The efficiency of a power screw (screw jack) is maximum when the lead angle (α) is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 145° - φ/2✓
- 245° + φ/2
- 390° + φ
- 490° - φ
Correct answer
45° - φ/2
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