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What will be the locus of a point on a thread unwound from a cylinder

AInvolute

BHelix

CStraight line

DCircle

Answer:

A. Involute


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The statements below are followed by two conclusions labelled I and II. Without resolving anything yourself, choose the conclusion(s) that logically follow(s) from the given statements.

Statements:

Irregularity is a cause for punishment in jobs.

Some irregular employees were fired from jobs.

Conclusions:

I: All fired employees are regular

II. Those employees who have not been punished are regular.