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Pharmacists recently conducted a study with respect to the reasons their customers purchased eye drops to soothe eye dryness. Dry eyes were more frequently experienced by customers who wore contact lenses than by custorners who did not wear contact lenses. The pharmacists concluded that wearing contact lenses, by itself, can cause contact wearers to have dry eyes.
which type of gears has point contact between two mating gears?
The other gears are the ............... gears which are those most used in normal driving.
The gears are termed as medium velocity gears, if their peripheral velocity is
Two advantages of using helical gears rather than spur gears in a transmission system are
If points P and X are just meeting at the point of contact between the dials , and if dial 2 spins at exactly double the speed of dial 1, which of the following pairs of contact ?
If points P and Y are just meeting at the point of contact between the dials , and if dial 1 spins at exactly three time the speed of dial 2, which of the following pairs of points will be the next pair to meet at the point of contact?
Two circular dials of exactly the same size are mounted on a wall side by side in such a way that their perimeters touch at one point. Dial 1, which is on the left , spins clockwise around its center , and dial 2 , which is on the right spins counter clockwise around its center . (Assume that there is no friction at the point of contact between the dials.) Each dial is marked on its perimeter at three points that are at equale distances around the points arked ondial 1 are N, O, and P and the points marked on dial 2 are X, Y, and Z. If points O and Z are just meeting at the point of contact between the dials , and if dial 1 spins at the same speed as dial 2, what is the smallest number of revolutions of each dial that will bring O and Z together again?
The rolling contact bearings as compared to sliding contact bearings have
Indirect contact heat exchangers are preferred over direct contact heat exchangers, because