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DI03000191 · Semester 3 · 5G scheme

Control Components

Notes and solutions following the Gujarat Technological University (GTU) syllabus for DI03000191. Independent material — not issued by the university.

Instrumentation & Control EngineeringAutomation & Robotics

Materials

Syllabus

The official syllabus this material follows.

  • Syllabus

    8 pages

    FreeRead

Complete Book

The whole syllabus, unit by unit, written for the exam.

Slides

Lecture slides for revision.

Past Papers

Original question papers from previous exams.

  • Summer 2026 question paper

    3 pages

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  • Winter 2025 question paper

    3 pages

    FreeRead

PYQ Solutions

Past university papers, fully solved.

  • Solved past papers — detailed answers

    33 pages · English + ગુજરાતી

    Premium Preview · 3 pages

Syllabus units

Unit 1: Control Valve
  • 1.1. Control valve terminology: Definition of Range ability, Hysteresis, Capacity and Linearity.
  • 1.2. Control Valve Parts: Define Control Valve parts: Body, Trim, Stem, Plug, Seat and Bonnet.
  • 1.3. Classification of Control Valve: 1.3.1 Based on construction: Globe valve, Ball valve, Butterfly valve, Needle valve, Pinch valve, Diaphragm valve, Solenoid valve. (Construction, working and Application) 1.3.2 Based on plug movement- Linear/Rotary. 1.3.3 Based on type of operation -Manually operated/ Remote operated. 1.3.4 Based on actuation signal- ATO/ATC. 1.3.5 Based on Failure of the Signal: Fail to Open, Fail to close
  • 1.4 Signal Converter: Construction and working with diagram 1.4.1 I to P converter 1.4.2 P to I converter
  • 1.5 Actuator-Function, Classification Construction and working: Electric, Pneumatic, Hydraulic.
  • 1.6. Positioner- Function, Classification and working: Pneumatic, Electro pneumatic
  • 1.7. Flow characteristics of control valve: Types, Definition and Application: Linear, Equal percentage and Quick opening.
  • 1.8.Maintenance of Control valve: Calibration procedure of Control Valve
Unit 2: Pneumatic Components
  • 2.1 Pneumatic Components: Construction, working and application 2.1.1 Flapper Nozzle, Air Filter Regulator lubricator, Volume Booster 2.1.2 Pneumatic Relay types: Bleed/ Non-bleed, Direct / Reverse.
Unit 3: Introduction to Gears
  • 3.1 Gears Terminology: Definition of Tooth, Pitch, Contact Ratio, Whole depth, Clearance, Addendum, Dedendum, Pitch of a Gear.
  • 3.2 Gear Need, types working and application: Spur Gear, Rack and Pinion, Helical Gear, Herringbone Gear, Bevel Gear and Worm Gear.
  • 3.3 Relationship between speed, torque and number of teeth of two different connected gears.
  • 3.4 Backlash in Gears: Phenomena and Solution.
Unit 4: Electrical Control Components
  • 4.1 Synchro: Construction, working, application( As an error detector)
  • 4.2 Servo Motor: Classification, Construction, working and application: 4.2.1 AC Servo Motor 4.2.2 DC Servo Motor
  • 4.3 Stepper Motor: Classification, Construction, working and application: 4.3.1 Permanent Magnet 4.3.2 Variable reluctance 4.3.3 Hybrid
Unit 5: Safety Components
  • 5.1 Relays: Classification, Construction, working and application: 5.1.1 Electromechanical Relay 5.1.2 Reed Relay 5.1.3 Solid State relay
  • 5.2 Switches: Classification, Construction, working and application: 5.2.1 Toggle switch: SPST, SPDT, DPST, DPDT 5.2.2 Push Button 5.2.3 DIP switch 5.2.4 Rotary switch (Single pole/Multi pole) 5.2.5 Thumbwheel switch 5.2.6 Limit switch (mechanical lever type) 5.2.7 Proximity Switch: Inductive, Capacitive, Optical
  • 5.3 Safety Components: Types, working and application 5.3.1 Alarm Annunciator 5.3.2 Safety Valve, Relief, Valve, Safety Relief Valve. 5.3.3 Rupture Disc
  • 5.4 SMART Devices: Features 5.4.1 Control Valve Actuator 5.4.2 Control Valve Positioners. 5.4.3 Digital Control Valve

About this course

For a diploma Instrumentation engineer, before knowing the control engineering fundamentals, it is important to maintain and calibrate different process instruments and control components used for controlling the various process parameters. Hence the students will understand the construction, working and applications of various control components. Therefore, this course has been designed to maintain control components of the instrumentation loop.