MEng 154 Lecture 1

The ratio of the number of teeth on the gear to the pitch diameter

• Circular pitch

• Diametral pitch

• Pitch diameter

• Module

For a pinion and gear to mesh, they should have the same diametral pitch.

• True

• False

• Partially true

• Partially false

The train value is positive if the last gear rotates ______ as the first.

• opposite sense

• same sense

A pinion gear with 22 teeth and a module of 6 mm has a rotational speed of 1200 rpm and drives a gear at 660 rpm. Determine the number of teeth on the gear.

• 20

• 40

• 60

• 80

For a pinion gear with 22 teeth and a module of 6 mm that has a rotational speed of 1200 rpm and drives a gear at 660 rpm, calculate the theoretical center distance

• 196 mm

• 206 mm

• 186 mm

• 176 mm