Design Engineer Question:
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In a gear, having involute teeth, the normal to the involute is a tangent to the

A. pitch circle
B. base circle
C. addendum circle
D. dedendum circle


Option B

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Screws jacks have multiple threads.

A. Agree
B. Disagree
The square threads are not so strong as V-threads but they offer less frictional resistance to motion than Whitworth threads.

A. Correct
B. Incorrect