2021 E-BOOK AVAILABLE
SYLLABUS
UNIT-I
Characteristics of signals and their representation Measuring systems, Performance characteristics, – Static characteristics, Dynamic characteristics, Errors in measurement – Gross errors, Systematic errors, Statistical analysis of random errors. Signals and their representations: Standard test, Periodic, Aperiodic, Modulated signal, Sampled data, Pulse modulation and pulse code modulation.
UNIT-II
Data transmission, telemetry and das Methods of data transmission – General telemetry system. Frequency modulation (FM), Pulse modulation (PM), Pulse amplitude modulation (PAM), Pulse code modulation (PCM) telemetry. Comparison of FM, PM, PAM and PCM. Analog and digital data acquisition systems – Components of analog DAS – Types of multiplexing systems: Time division and frequency division multiplexing – Digital DAS – Block diagram – Modern digital DAS (Block diagram).
UNIT-III
Signal analyzers, digital meters Wave analysers – Frequency selective analyzers, Heterodyne, Application of wave analyzers – Harmonic analyzers, Total harmonic distortion, Spectrum analyzers, Basic spectrum analyzers, Spectral displays, Vector impedance meter, Q meter. Peak reading and RMS voltmeters, Digital voltmeters – Successive approximation, Ramp and integrating type – Digital frequency meter–digital multimeter – Digital tachometer.
UNIT-IV
Transducers Definition of transducers, Classification of transducers, Advantages of electrical transducers, Characteristics and choice of transducers, Principle of operation of resistive, Inductive, Capacitive transducers, LVDT, Strain gauge and its principle of operation, Gauge factor, Thermistors, Thermocouples, Synchros, Piezoelectric transducers, Photovoltaic, Photo conductive cells, Photo diodes.
UNIT-V
Measurement of non-electrical quantities Measurement of strain, Gauge sensitivity, Measurement of displacement, Velocity, Angular velocity, Acceleration, Force, Torque, Temperature, Pressure, Flow, Liquid level.
