2-23.
You have a pinion gear with 14
teeth driving a spur gear with 42
teeth.
If the pinion turns at 420
rpm, what will be the speed of the
spur gear?
1.
42 rpm
2.
140 rpm
3.
160 rpm
4.
278 rpm
For items 2–24 through 2-28, refer
o
to the gear system in figure 2B and
to the symbols which follow.
Gears C and D are rigidly attached
to one another.
2-24.
Given Sa, A, and B, a formula for
testing Sb is
2-25.
Given Sd, A, B, C, D, and E, a
formula for finding Se is
2–26.
Gear A would make how many
revolutions for every complete
revolution of gear C?
1.
4/5
2.
1 1/5
3.
1 1/4
4.
1 1/2
2-27.
Which formula is used for finding
the mechanical advantage of the
system of gears including only
gears B, C, D, and E, assuming that
power is applied to gear B?
2–28.
Assuming that power is applied to
gear A, the entire gear train will
have a mechanical advantage of
1.
0.67
2.
1.67
3.
3.34
4.
6.68
15
