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| Q. |
Statement 1: Flank angle of symmetrical thread is known as thread’s half-angle. Statement 2: It is measured parallel to the axis of a thread. |
| A. | t, f |
| B. | f, f |
| C. | t, t |
| D. | f, t |
| Answer» A. t, f | |
| Explanation: in a screw thread the angles between individual flanks and perpendicular to the thread axis which passes through the vertex of the fundamental triangle are called flank angles. the flank angle of a symmetrical thread is called as the half-angle of a thread. | |
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