Metrology And Measurements Set 11

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This set of Metrology and Measurements Multiple Choice Questions & Answers (MCQs) focuses on Metrology And Measurements Set 11

Q1 | What is the tolerance of the straightness of a line?
  • maximum deviation from the straight line joining two extremities
  • maximum deviation from the middle point of straight line joining two extremities
  • minimum deviation from the straight line joining two extremities
  • minimum deviation from the middle point of straight line joining two extremities
Q2 | For checking straightness, straight edge is placed over a surface and these two are viewed against the light. Which of the following option true if colour of light is red?
  • gap between 0.12 to 0.17 mm
  • gap between 0.2 to 0.7 mm
  • gap between 1.7 to 2 mm
  • gap between 0.0012 to 0.0017 mm
Q3 | What is the name of a pair of straight edges?
  • drum sticks
  • lower pair
  • winding sticks
  • self closed pair
Q4 | What is the position of straightness interferometer in straightness measurement optics?
  • before laser head
  • after straightness reflector
  • between laser head and straightness reflector
  • no need of interferometer
Q5 | What is the range of straightness measurement in straightness measurement optics?
  • ±2.5 mm
  • ±5 mm
  • ±10 mm
  • ±20 mm
Q6 | Which of the following is not the factor affecting the accuracy of straightness measurement by optics?
  • air turbulence
  • optics fixed rigidly
  • slope error
  • localised heat sources
Q7 | At which part of the precision straight edge is generally lapped?
  • edges only
  • base only
  • base and edges both
  • all over the surface
Q8 | What type of thread is formed on female screw gauge?
  • external thread
  • internal thread
  • both internal and external
  • major screw thread
Q9 | Which of the following option is true for truncation?
  • thread can be tranculated at crest only
  • thread can be tranculatd at root only
  • thread can be tranculated at crest and root both
  • thread can’t be tranculated at crest and root both
Q10 | What is dedendum for external threads?
  • radial distance between pitch and minor cylinder
  • radial distance between major and pitch cylinder
  • radial distance between major and minor cylinder
  • axial distance between major and pitch cylinder
Q11 | Which of the following is not a name of the major diameter of an external thread?
  • outside diameter
  • crest diameter
  • full diameter
  • cone diameter
Q12 | Which of the following is not true about the axial thickness of screw thread?
  • measured in direction perpendicular to the axis of thread
  • measured on pitch cylinder
  • distance between opposite faces of same thread
  • measured at the same thread
Q13 | What is the alternative name of functional diameter?
  • cone diameter
  • virtual diameter
  • root diameter
  • inside diameter
Q14 | What is a thread per inch in screw thread?
  • pitch in inches
  • axial distance moved by threaded part
  • reciprocal of pitch in inches
  • radial distance moved by threaded part
Q15 | Which of the following is not true about effective diameter?
  • also known as pitch diameter
  • it decides quality of fit between nut and screw
  • this is the diameter of minor cylinder
  • it is a very important dimension for screw threads
Q16 | Which of the following is true for the multiple start screw threads?
  • it is produced by a single helical groove
  • grooves should be different in spacing
  • it gives a quick transverse
  • it is formed in a transverse section on a cylinder
Q17 | Flanks of the threads connect the crest with the roots.
  • true
  • false
Q18 | What is the effect of improper alignment of each tooth?
  • tooth thickness increases
  • face width decreases
  • load will not distributed evenly
  • pitch of teeth reduced
Q19 | Which of the following is not true about concentricity of teeth?
  • fluctuating velocity will be noticed when not concentric
  • can be checked by using projector
  • inaccuracy of parts when not concentric
  • should be tested to ensure the proper heat treatment
Q20 | Which of the following option is true about an analytical method of inspection of gears?
  • analytical method is widely used for industries
  • this method is fast
  • all individual elements of gear teeth are checked
  • more accurate
Q21 | Which of the following element is not determined by analytical inspection?
  • profile
  • composite vibrations
  • spacing
  • pitch
Q22 | Which of the following is not determined by the functional type of inspection?
  • lead
  • noise level
  • variation in action
  • vibration
Q23 | Which of the following statement is true about inspection of gear?
  • profile is determined by functional inspection
  • backlash is determined by analytic inspection
  • analytic test require running test of gear
  • thickness of tooth is measured by functional inspection
Q24 | Which of the following machine is used for rolling tests?
  • parkson gear tester
  • tooth caliper
  • base pitch measuring instrument
  • involute profile testing machine
Q25 | If reference circle of gear is eccentric then which error is reflected by this eccentricity?
  • cyclic error
  • periodic error
  • pitch error
  • undulation