Q. Which of the following option is true for truncation?
✅ Correct Answer: (C)
thread can be tranculated at crest and root both
Explanation: a thread is truncated sometimes at the crest or at the root or at both root and crest and root. the radial distance from the crest to the nearest apex of the fundamental triangle is truncation at the crest is and at the root it is the radial distance from the root to the nearest apex.