Code: 4341902
Credits: 2
Semester 4
MECHANICAL
Measurements and Metrology
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Measurements and Metrology Syllabus — Unit-wise Content
The official GTU curriculum for Measurements and Metrology (subject code 4341902) as prescribed for MECHANICAL · Semester 4 divides the course into 6 units, covering 41 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (4341902)Unit 1 Linear and angular measurement
- 1.1. Inspection, quality and quality control- definitions and differences.
- 1.2. Define accuracy, precision and error.
- 1.3. Surface plates-types, important features, standards/important sizes, applications and precautions in use.
- 1.4. Principle of vernier scale and least count.
- 1.5. Types, constructional sketch, major parts and their functions, least count, measuring methods and measurement illustration (for e.g., 12.48mm) of: i. Vernier caliper. ii. Micrometer. iii. Telescopic gauge. iv. Height gauge. v. Depth gauge.
- 1.6. Slip gauge-types, applications, and wringing method. Measurements and Metrology Course Code: 4341902 different levels) Topics and Sub-topics
- 1.7. Sketch, major parts and their functions, least count, measuring methods and measurement illustration of: I. Bevel Protector. II. Sine bar. III. Angle gauges. IV. Spirit level. V. Clinometers. VI. Auto collimator.
- 1.8. Calibration – concept and need.
Unit 2 Measurement of geometrical tolerances
- 2.1. Dial indicators/gauge-types, constructional sketch and applications.
- 2.2. Definition, symbol and measuring methods of: I. Straightness. II. ii. Flatness. III. Squareness. IV. Parallism. V. Perpendicularity. VI. Roundness. VII. Concentricity. VIII. Cylindricity. IX. Run out and ovality.
Unit 3 Measurement of surface roughness
- 3.1. Terminology used in connection with surface finish.
- 3.2. Comparison methods to inspect surface finish-concept and applications.
- 3.3. Direct instrument measurement methods- types and concepts.
- 3.4. Construction, working and applications of Talysurf surface roughness tester and Tomlinson tester.
- 3.5. Centre line average and Root Mean Square systems of surface texture evaluation- terminology used, concept, equations and numerical examples.
- 3.6. Indication of various surface roughness characteristics with surface roughness symbols- interpretation.
Unit 4 Gear and thread measurement
- 4.1. Types of gears.
- 4.2. Forms of gear teeth-types and concept.
- 4.3. Gear tooth Terminology.
- 4.4. Sketch, major parts and their functions, least count, measuring methods and measurement illustration of gear tooth vernier.
- 4.5. Derivation and numerical example to measure gear tooth thickness using: I. Gear tooth vernier. II. Constant chord method. III. Base tangent method. Measurements and Metrology Course Code: 4341902 different levels) Topics and Sub-topics
- 4.6. Gear tooth profile measurement.
- 4.7. Threads-classification, elements, specifications and forms.
- 4.8. Measurement of major and minor diameters.
- 4.9. Three and two wire method of measuring effective diameter of external thread-concept, terminology used, best wire size, derivation of equation and numerical example.
- 4.10. Thread micrometer-sketch, method to use and determination of dimension.
- 4.11. Pitch measurement methods.
Unit 5 Limit gauges, Transducers and sensors
- 5.1. Limit gauges-classification, sketch and applications.
- 5.2. Comparators-concept, types and applications.
- 5.3. Instrumentation-introduction, performance characteristics.
- 5.4. Static characteristics of instruments.
- 5.5. Transducers-concept, classifications, physical quantities which can be measured, advantages and disadvantages.
- 5.6. Electrical transducers-types, working principles and applications of: I. Linear Variable Differential Transducers (LVDT). II. Resistance type. III. Capacitance type. IV. Inductance type. V. Piezo-electric type.
- 5.7. Sensors- classification and applications.
- 5.8. Use of transducers and sensors as a safety measures.
Unit 6 Temperature and Pressure measurement
- 6.2. Classification, working principle, construction, working, advantages, limitations and applications of temperature measuring devices: I. Mercury in glass thermometer. II. Bimetallic thermometer. III. Resistance thermometer. IV. Thermistor. V. Thermocouple. VI. Radiation pyrometers. VII. Optical pyrometers. Measurements and Metrology Course Code: 4341902 different levels) Topics and Sub-topics
- 6.3. Pressure measurement scales.
- 6.4. Types and applications of manometers (only list and applications).
- 6.5. Working principle, construction, working, advantages, limitations and applications of pressure measuring devices: I. Bellows type pressure gauge. II. Diaphragm type pressure gauge. III. Bourdon tube pressure gauge. IV. Dead weight piston gauge.
- 6.6. Concept of transducer-based pressure measuring devices resistance type, capacitance type and inductance type.
- 6.7. Use of Temperature and Pressure measurement as a safety measures.
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