(Hindi) PRODUCTION 5: Measurement Of Lines And Surfaces

In this course, Abhinandan Kumar Azad discusses Measurement Of Lines And Surfaces. He takes you through topics like Accuracy & Precision, Calibration, Vernier Caliper, Micrometer, Dial Indicator, Slip Gauge, Comparator, Sine Bar, 2 & 3 Wire Method, Surface Roughness, Stylus Equipment, Profilometer, Optical Flats, Talysurf, Autocollimator etc.

https://youtu.be/ig7dyMNBDrs

Target Audience:
GATE, IES, ESE, DRDO, BARC, SSC JE, RRB SSE, UPSC, NPCIL, CIL and Engineering Students

Angula Measurement (in Hindi)
Angular Measurement: Bevel Protractor & Sine Bar; Sine Bar: Definition, Arrangement, Symmetric Diagram, Specification, Disadvantages and Problem Practice.

Thread Measurement 1: Three-Wire Method (in Hindi)
Thread Measurements: Three-Wire Method: Distance W over the outer edge, ISO metric thread, Best Wire Size; The parameters that are measured in thread Measurements are: Major Diameter (Micrometre), Pitch Diameter or Effective Diameter (Floating Carriage Micrometre, Three Wire and Two Wire Method), Pitch (Screw Pitch Gauge, Pitch Measuring Machine), Thread Form (Optical Projector).

Thread Measurement 2: Two-Wire Method (in Hindi)
Thread Measurements, 2-Wire Method, Pitch Diameter or Effective Diameter, Problem Practice.

Measurement of Surfaces: Basics (in Hindi)
Measurement of Surfaces, Flat and Smooth Surfaces, Roughness Height, Roughness Width, Roughness Width cut-off, Waviness, Lay Direction, Flaw, Representation of Surface Roughness

Evaluation of Surface Roughness (in Hindi)
Evaluation of Surface Roughness: Centre Line Average (CLA) or Arithmetical Mean Deviation (Ra), Root Mean Square (Rg) (rms value), ; Determination of Mean Line: M-System & E-System; Arithmetical Average; Problem Practice.

Metgod of Measuring Surface Roughness (in Hindi)
Method of measuring Surface Roughness: Observation and Touch, Stylus based equipment, Interferometry, Stylus Equipment, Profilometer, Contact Profilometer, Non-contact Profilometer, Advantage of Optical Profilometer.

Optical Profilometer (in Hindi)
Optical Flats, Optical-grade clear fused quartz, Bright & Dark Fringe, Optical flat as a Comparator, The distance air gap between two successive fringes.

Interferometer, Parallelism Error & Talysurf (in Hindi)
Interferometer, Parallelism Error, Talysurf, Problem Practice of Optical Flat as a Comparator.

Limit Gauges (in Hindi)
Limit Gauges, Plug Gauge, Snap/Gap/Ring Gauge, Allocation of manufacturing tolerances of Limit Gauges, Unilateral and Bilateral System.

Wear Allowance of Limit Gauges (in Hindi)
Limit Gauges, Wear Allowance, Problem Practice.

Taylor's Principal & Preferred Number (in Hindi)
Taylor's Principal, Preferred Number, Feeler Gauge, Why is a unilateral tolerance peeferred over bilateral tolerance?

Miscellaneous of Metrology - Part 1 (in Hindi)
Clinometers, Autocolimator, Optical Square, Laser Scanning Micrometer and Questions related to them.

Miscellaneous of Metrology - Part 2 (in Laser Interferometer, McLeod Gauge, Planimeter, LVDT, Tool Maker's Microscope, Telescopic Gauge, Coordinate Measuring  Machine (CMM), Previous Years Questions.