Access JNTUK EMI Imp Questions 2024
Syllabus
EMI Imp Questions UNIT I:
Performance characteristics of instruments, Static characteristics: Accuracy, Resolution,
Precision, Expected value, Error, Sensitivity. Dynamic Characteristics; speed of response,
Fidelity, Lag and Dynamic error, Types of errors in measurements and their analysis, Design
of multi-range AC, DC meters (voltmeter &ammeter) and ohmmeter(series &shunt type)
using D’arsonval movement. True rms meter.
EMI Imp Questions UNIT II:
Specifications and designing aspects of Signal Generators –AF sine and square wave
signal generators, Function Generators, Random noise generators, Arbitrary waveform
generators.WaveAnalyzers,HarmonicDistortionAnalyzers,SpectrumAnalyzers,DigitalFourier
Analyzers.
EMI Imp Questions UNIT III:
Oscilloscopes-general purpose CROs, block diagram, functions and implementation of
various blocks, specifications, various controls and their functions , types of probes used in
CROs, Measurement of frequency and phase difference using Lissajous patterns
Special purpose CROs; sampling oscilloscope, analog storage oscilloscope, digital storage
oscilloscope
EMI Imp Questions UNIT IV:
Bridge circuits- Wheat stone bridge, measurement of very low resistance, Measurement of
inductance- Maxwell’s bridge, Anderson bridge. Measurement of capacitance-Schearing
Bridge, Wien Bridge, Errors and precautions in using bridges
Q-meter, principle of operation, measurement methods and sources of errors Counters :
principle of operation -modes of operation- totalizing mode, frequency mode and time period
mode-sources of errors.
EMI Imp Questions UNIT V:
Transducers-active & passive transducers: Resistance, Capacitance, inductance, Strain
gauges, LVDT, Piezo Electric transducers.
Measurement of physical parameters temperature, force, pressure, velocity, acceleration and
displacement
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