Exam (elaborations) Jharkhand Technical University

Gear – Objective Question and answer
1. The smaller and generally the driving gear of a pair of mated gears is called _________
a) pitch
b) module
c) rack
d) pinion

2. The distance measured along the circumference of the pitch circle from a point on one tooth to the
same point on the adjacent tooth is called ________________
a) pitch diameter
b) circular pitch
c) pitch point
d) line of centres

3. The number of teeth per unit length of the pitch circle diameter is called ________________
a) diametral pitch
b) module
c) clearance
d) gear ratio

4. The ratio of the number of teeth on the gear to the number of teeth on the pinion is called ______
a) velocity ratio
b) module
c) gear ratio
d) pitch point

5. The ratio of pitch diameter to the number of teeth is called _________
a) module
b) addendum
c) dedendum
d) backlash

6. The circle passing through the upper tips of the teeth is called _________________
a) pitch circle
b) circular pitch
c) dedendum circle
d) addendum circle

7. The radial height of a tooth above the pitch circle is called ____________
a) addendum
b) dedendum
c) rack
d) line of centres

8. The circle passing through the roots of the teeth is called ________________
a) addendum
b) addendum circle
c) dedendum circle
d) rack