Which of the following statements is true?
A. Efficiency of the screw decreases with the increase of the coefficient of friction
B. Clutch and coupling can be considered to be the same.
1
Only A
2
Only B
3
Both A and B
4
None of these
Which of the following statements is true?
A. Efficiency of the screw decreases with the increase of the coefficient of friction
B. Clutch and coupling can be considered to be the same.