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Thursday, 5 March 2015

Thread Measuring & Thread Gauges - True and False

Thread Measuring & Thread Gauges - True and False Points : thread measuring and thread gauges, mechanical engineering, metrology, mechanical technology, mcqs, evaluation, judgment, gauging, rating, consideration, analysis, examination, workup, test, review, objective type question and answer, true and false True and False
  1. The truncation at the crest the radial distance from the crest to the nearest apex of the fundamental triangle. T
  2. Light pressure is required for assembly, Not to be used to with stand other than very light load in wringing fit. F
  3. In heavy force fit, it is tightest fit that should be used on cast iron external members. F
  4. In three wire method, wires or roads of known diameter are used one on one side and two on the other side. T
  5. Multiple start-screw thread similarity formed in an axial section on a cylinder. T
  6. A thread formed on the outside of a workpiece is called internal thread. F
  7. The pitch of the thread is he distance measured parallel to the axis of the thread. T
  8. Free fit, large allowances accuracy is not essential. F
  9. Dedendum for internal thread is the radial distance between the major and pitch cylinders. T
  10. Sung fit is zero to negative allowance assemblies are selective and not inter changeable. F
  11. If a point of thread moves towards the observer the thread is right hand. F
  12. Multiple start-screw thread similarly formed in an axial section on a cylinder. T
  13. Screw thread form on a cone or frustum of a cone is known as tapered screw thread. T
  14. The basic pitch is equal to the lead divided by the number of threads. T
  15. In the metric system the pitch always is expressed in inches. F

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