Mechanical Engineering MSBTE Ignited minds

 Question on figure with explanation 1. Explain wringing process of slip gauges with sketch 2. Explain Sigma Comparator with sketch 3. Explain principle of Pneumatic comparator with sketch 4. Explain Two wire method of screw Measurement 5. Explain Parkinson's gear tester with sketch 6. Explain Gear tooth caliper with sketch 7. Explain alignment test of lathe machine alignment of both centre 8. Explain use of sine bar to measure angle of taper plug gauge 9. Draw surface finish designation on drawing  10. Explain Adjustable snap gauge with sketch * Question on Difference between or comparison* 1. Difference between Line standard and End Standard 2. Compare Accuracy and Precision 3. Compare Slip gauges with Angle gauges 4. Differentiate between Hole basis and Shaft basis system 5. Differentiate between measuring instrument and Limit gauges 6. Compare tolerance and Allowance  Numerical Based Question 1.Measure a distance of 6.905 mm with the help of slip gauges with the help of 112 set

  Questions on Definitions  1. Define Metrology  2. Define Accuracy and Precision 3. Define Calibration 4. Define Line and End standard 5. Define wavelength standard 6. Define Comparator  7. Define Least count of an Instruments 8. Define Tolerance and Allowance 9. Define Interchangeability  10.Define Pitch of the screw 11. Define Module of gear 12. Define Ra and CLA value  13.Define RMS value 14. Define Lay and sampling length 15. Define Primary and Secondary texture  of surface finish Question on List of various types/instruments 1.List different types of errors in Gear 2.List different Angular measuring devices 3. List various factors for  the selection of an instrument 4. List types of fits 5. List various types of comparators 6.List different methods of measuring Tooth Thickness 7.List Different Measuring standard 8.List the causes of Surface Roughness 9. List the uses of Snap Gauges 10.List different sources of errors in the Measuring instruments 11. List applications of pneumat

  Hints for Quick recall/revision Unit 1 1. Metrology : Science of Measurement with agreed units and methods 2. Types of metrology :  use short form LIDS   to recall types LIDS means L : legal metrology    I : Industrial metrology  D : Deterministic   metrology  S : Scientific metrology 3. Instrument characteristics :   use short form APSC   to recall types Accuracy : Closeness with true value of measurement Precision : Repeatability of  same measurement in  similar conditions of measurement Sensitivity : Ability to detect small input variations by instrument Calibration : Checking instrument scale with certified standards.   Slip gauges are used as a standards for calibration of vernier, micrometer 4. Errors : Types : Systematic or controllable errors   and Random ( Accidental errors) Reading error : Parallax error  Observer's direction should be proper to read the correct reading. Loading error or contact pressure Error: More force o