Spring index = _________________

• A. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/02/engineering-drawing-questions-answers-construction-helical-springs-q3a.png"><img alt="Spring index is the ratio of mean diameter of coil to diameter of wire - option a" class="size-full wp-image-230632" height="37" src="https://www.sanfoundry.com/wp-content/uploads/2018/02/engineering-drawing-questions-answers-construction-helical-springs-q3a.png" width="145"/></a>
• B. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/02/engineering-drawing-questions-answers-construction-helical-springs-q3b.png"><img alt="Spring index is the ratio of mean diameter of coil to diameter of wire - option b" class="size-full wp-image-230631" height="40" src="https://www.sanfoundry.com/wp-content/uploads/2018/02/engineering-drawing-questions-answers-construction-helical-springs-q3b.png" width="165"/></a>
• C. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/02/engineering-drawing-questions-answers-construction-helical-springs-q3c.png"><img alt="Spring index is the ratio of mean diameter of coil to diameter of wire - option c" class="size-full wp-image-230630" height="36" src="https://www.sanfoundry.com/wp-content/uploads/2018/02/engineering-drawing-questions-answers-construction-helical-springs-q3c.png" width="146"/></a>
• D. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/02/engineering-drawing-questions-answers-construction-helical-springs-q3d.png"><img alt="Spring index is the ratio of mean diameter of coil to diameter of wire - option d" class="size-full wp-image-230629" height="39" src="https://www.sanfoundry.com/wp-content/uploads/2018/02/engineering-drawing-questions-answers-construction-helical-springs-q3d.png" width="171"/></a>