EI6301 Electrical Measurements Syllabus Notes Question Papers Question Bank with answers download
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EI6301 Electrical Measurements Syllabus - EM Syllabus
Galvanometers – Ballistic, D’Arsonval galvanometer – Theory, calibration, application – Principle, construction, operation and comparison of moving coil, moving iron meters, dynamometer, induction type & thermal type meter, rectifier type – Extension of range and calibration of voltmeter and ammeter – Errors and compensation.
UNIT II MEASUREMENT OF POWER AND ENERGY
Electrodynamometer type wattmeter – Theory & its errors – Methods of correction – LPF wattmeter– Phantom loading – Induction type kWh meter – Induction type energy meter – Calibration of wattmeter and Energy meter.
UNIT III POTENTIOMETERS & INSTRUMENT TRANSFORMERS
DC potentiometer – Basic circuit, standardization – Laboratory type (Crompton’s) – AC potentiometer Drysdale (polar type) type – Gall-Tinsley (coordinate) type – Limitations & applications – Instrument Transformer:-C.T and P.T construction, theory, operation and characteristics.
UNIT IV RESISTANCE MEASUREMENT
Measurement of low, medium & high resistance – Ammeter, voltmeter method – Wheatstone bridge– Kelvin double bridge – Series and shunt type ohmmeter – High resistance measurement :-Loss of charge method, Megohm bridge method –Megger – Direct deflection methods – Price’s guard-wire method – Earth resistance measurement.
UNIT V IMPEDANCE MEASUREMENT
A.C bridges – Measurement of inductance, capacitance – Q of coil – Maxwell Bridge – Wein’s bridge – Schering bridge – Anderson bridge –Hay’s bridge- Campbell bridge to measure mutual inductance – Errors in A.C. bridge methods and their compensation – Detectors – Excited field – A.C. galvanometer – Vibration galvanometer.
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