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CampusPrep

EX-604 (A) RGPV B.Tech

Electronic Instrumentation (EI)

Previous year papers and the official syllabus are free to read, no account needed.

Previous Year Papers

5 papers, latest Jun 2025

Free
See all 5 papers

Syllabus, notes and important questions for EX-604 (A)

Syllabus units

Topics as the official RGPV syllabus lists them.

Unit 1 Introduction to CRO 18 topics
  • Different parts of CRO
  • Block diagram of CRO
  • Electrostatic focusing
  • Electrostatic deflection
  • Post‑deflection acceleration
  • Screen for CRTs
  • Graticule
  • Vertical and horizontal deflection system
  • Time‑base circuit
  • Oscilloscope probes and transducers
  • Attenuators
  • Applications of CROs
  • Lissajous patterns
  • Special purpose CROs – multi‑input
  • Dual‑trace CRO
  • Dual‑beam CRO
  • Sampling oscilloscope
  • Storage oscilloscope (analog & digital)
Unit 1 notes
Unit 2 A.C. Bridge Measurement 17 topics
  • Sources and detectors for bridge circuits
  • Use of bridges for measurement of inductance, capacitance & Q factor
  • Maxwell's bridge
  • Maxwell's inductance‑capacitance bridge
  • Hay's bridge
  • Anderson's bridge
  • Owen's bridge
  • De‑Sauty's bridge
  • Schering bridge
  • High‑voltage Schering bridge
  • Measurement of relative permittivity
  • Heaviside‑Campbell bridge
  • Wein's bridge
  • Universal bridge
  • Sources of errors in bridge circuits
  • Wagner's earthing device
  • Q‑meter and its applications and measurement methods
Unit 2 notes
Unit 3 Transducers 19 topics
  • Definition and classification of transducers
  • Mechanical devices as primary detectors
  • Characteristics and selection criteria for transducers
  • Resistive, inductive and capacitive transducers
  • Strain gauge and gauge factor
  • Thermistor
  • Thermocouples
  • Linear Variable Differential Transformer (LVDT)
  • Rotary Variable Differential Transformer (RVDT)
  • Synchros
  • Piezo‑electric transducers
  • Magneto‑elastic and magnetostrictive Hall‑effect transducers
  • Optoelectronic transducers – photovoltaic cells, photoconductive cells, photodiodes, photo‑conductive cells, phototransistors, photo‑optic transducers
  • Introduction to analog and digital data‑acquisition systems
  • Instrumentation systems used
  • Interfacing transducers to electronic control and measuring systems
  • Multiplexing – D/A multiplexing, A/D multiplexing
  • Special encoders
  • Digital control description
Unit 3 notes
Unit 4 Signal Generators 19 topics
  • Fixed and variable‑frequency AF oscillators
  • Sine‑wave generators
  • Standard signal generator
  • AF sine and square‑wave generator
  • Function generator
  • Square‑ and pulse‑generator
  • Random‑noise generator
  • Sweep generator
  • TV sweep generator
  • Marker generator
  • Sweep‑marker generator
  • Wobblyscope
  • Video‑pattern generator (Vectroscope)
  • Beat‑frequency oscillator
  • Wave analyser – basic wave analyser
  • Frequency‑selective wave analyser
  • Heterodyne wave analyser
  • Harmonic‑distortion analyser
  • Spectrum analyser – digital Fourier analyser
Unit 4 notes
Unit 5 Digital Instruments 21 topics
  • Advantages of digital instruments over analog instruments
  • Resolution and sensitivity of digital meters
  • Digital voltmeter – ramp type
  • Digital voltmeter – dual‑slope integration type
  • Digital voltmeter – integrating type
  • Digital voltmeter – successive‑approximation type
  • Continuous‑balance DVM or servo‑balancing potentiometer type DVM
  • Compression of electronic & digital voltmeter
  • Digital multimeter
  • Digital frequency meter
  • Time‑period measurement
  • High‑frequency measurement
  • Electronic counter
  • Digital tachometer
  • Digital pH meter
  • Digital phase meter
  • Digital capacitance meter
  • Digital display systems and indicators – CRT, LED, LCD, Nixie tubes, electroluminescent displays, incandescent displays, electrophoretic image displays, liquid‑vapour displays, dot‑matrix displays
  • Analog recorders
  • X‑Y recorders
  • Instruments used in computer‑controlled instrumentation – RS‑232C, IEEE‑488 (GPIB) interface
Unit 5 notes
Read the full syllabus

Exam insights

Counted from 5 past EX-604 (A) papers.

Marks asked per paper, by unit

  • Unit 1 Introduction to CRO 24 marks
  • Unit 2 A.C. Bridge Measurement 22 marks
  • Unit 3 Transducers 31 marks
  • Unit 4 Signal Generators 17 marks
  • Unit 5 Digital Instruments 20 marks

Average marks of the questions from each unit in one paper. You answer only some of them, so the total is more than the paper’s maximum.

Asked again and again

  1. Explain the working principle / theory of a resistance strain gauge (resistance change due to strain) and derive / define the expression for gauge factor.

    Asked 3 times: 2024, 2023, 2022

  2. What is a function / signal generator? Explain its working principle / operation with block diagram, including how sine wave is produced.

    Asked 3 times: 2024, 2023, 2022

  3. Explain the principle, construction and working of dual-beam CRO and dual-trace CRO with neat sketch and contrast/compare them.

    Asked 2 times: 2025, 2024

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