ELECTRICAL ENGINEERING AND INSTRUMENTATION Beginner Guide

Three-phase circuits, a review. Construction of DC machines - Theory of operation of DC generators - Characteristics of DC generators- Operating principle of DC motors - Types of DC motors and their characteristics - Speed control of DC motors- Applications.
UNIT II TRANSFORMER 9
Introduction - Single-phase transformer construction and the principle of operation - EMF equation of transformer-Transformer no-load phasor diagram - Transformer on-load phasor diagram - Equivalent circuit of transformer - Regulation of transformer -Transformer losses and efficiency- All day efficiency -autotransformers.
UNIT III INDUCTION MACHINES AND SYNCHRONOUS MACHINES 9
Principle of operation of three-phase induction motors - Construction -Types - Equivalent circuit -Construction of single-phase induction motors - Types of single-phase induction motors
- Double revolving field theory - starting methods - Principles of alternator - Construction details - Types -Equation of induced EMF - Voltage regulation. Methods of starting synchronous motors - Torque equation - V curves - Synchronous motors.
UNIT IV BASICS OF MEASUREMENT AND INSTRUMENTATION 9
Static and Dynamic Characteristics of Measurement - Errors in Measurement - Classification of Transducers - Variable resistive - Strainguage, thermistor RTD - transducer - Variable Capacitive Transducer - Capacitor Microphone - Piezo Electric Transducer - Variable Inductive transducer - LVDT, RVDT
UNIT V ANALOG AND DIGITAL INSTRUMENTS 9
DVM, DMM - Storage Oscilloscope. Comparison of Analog and Digital Modes of operation, Application of measurement system, Errors. Measurement of R, L, and C, Wheatstone, Kelvin, Maxwell, Anderson, Schering and Wien bridges Measurement of Inductance, Capacitance, Effective resistance at high frequency, Q-Meter.


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