

MCQOPTIONS
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1. |
The maximum efficiency of a screw jack is |
A. | 1 – sinφ/ 1 + sinφ |
B. | 1 + sinφ/ 1 – sinφ |
C. | 1 – tanφ/ 1 + tanφ |
D. | 1 + tanφ/ 1 – tanφ |
Answer» B. 1 + sin‚âà√¨‚àö√∫/ 1 ‚Äö√Ñ√∂‚àö√ë‚àö¬® sin‚âà√¨‚àö√∫ | |