Multiple Choice Question (MCQ)
Question: Calculate the change gear to cut 6 mm pitch on a work having a lead screw of 5 mm pitch. Gears available from 20 to 120 teeth by 5 teeth range.
A.
Driver 60 driven 50
B.
Driver 40 driven 20
C.
Driver 85 teeth driven 60
teeth
D.
Driver 100 teeth driven 25 teeth
Correct Answer: Driver 60 driven 50
Explanation
The measurement of physical quantities is one of the most important operations in engineering. Every quantity is measured in terms of some arbitrary, but internationally accepted units, called fundamental units.
All physical quantities, met within this subject, are expressed in terms of the following three fundamental quantities :
1. Length (L or l ),
2. Mass (M or m), and
3. Time (t).