EE8403 – NOTES & QP
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EE8403 – SYLLABUS
UNIT I INTRODUCTION
Functional elements of an instrument — Static and dynamic characteristics — Errors in measurement — Statistical evaluation of measurement data — Standards and calibration- Principle and types of analog and digital voltmeters, ammeters.
UNIT II ELECTRICAL AND ELECTRONIC INSTRUMENTS
Principle and types of multi meters — Single and three phase watt meters and energy meters — Magnetic measurements — Determination of B-H curve and measurements of iron loss — Instrument transformers — Instruments for measurement of frequency and phase.
UNIT III COMPARATIVE METHODS OF MEASUREMENTS
D.C potentiometers, D.C (Wheat stone, Kelvin and Kelvin Double bridge) & A.C bridges (Maxwell, Anderson and Schering bridges), transformer ratio bridges, self-balancing bridges. Interference & screening — Multiple earth and earth loops — Electrostatic and electromagnetic Interference — Grounding techniques.
UNIT IV STORAGE AND DISPLAY DEVICES
Magnetic disk and tape — Recorders, digital plotters and printers, CRT display, digital CRO, LED, LCD & Dot matrix display — Data Loggers.
UNIT V TRANSDUCERS AND DATA ACQUISITION SYSTEMS
Classification of transducers — Selection of transducers — Resistive, capacitive & inductive Transducers — Piezoelectric, Hall effect, optical and digital transducers — Elements of data acquisition system — Smart sensors-Thermal Imagers.