To calculate the Small Dia of Taper, which formula is used?

The formula for calculating the Small Diameter of a taper is based on the relationship between the big diameter, small diameter, and the length of the tapering section. The correct formula expresses the taper's angle in terms of the change in diameter over the length.

The first option outlines the change in diameter as a function of the length, multiplied by 12 to convert the units typically from feet to inches or another appropriate unit. It reflects how the taper decreases over the specified length. This formula effectively allows for the calculation of the small diameter by providing a clear relationship between the large diameter and the taper’s length.

Precision in this calculation is crucial in machining, as it affects how workpieces are shaped and fit during assembly. Thus, this formula is an essential concept in job planning and machining processes where tapering operations are involved.