EI2202 ELECTRICAL MEASUREMENTS Syllabus - EIE 3rd Semester - Anna University


EI2202
ELECTRICAL MEASUREMENTS
L T  P C

(Common to EIE & ICE)
3  1 0  4

AIM
To provide adequate knowledge in electrical measurements and instrumentation.

OBJECTIVES
To make the students to gain a clear knowledge of the basic laws governing the operation of electrical instruments and the measurement techniques.

i.    Emphasis is laid on the meters used to measure current & voltage.
ii.    To have an adequate knowledge in the measurement techniques for power and energy, power and energy meters are included.
iii.  Elaborate discussion about potentiometer & instrument transformers. iv.  Detailed study of resistance measuring methods.
v.   Detailed study of inductance and capacitance measurement.

UNIT I        MEASUREMENT OF VOLTAGE AND CURRENT                                                       9
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                                                             9
Electrodynamometer type wattmeter Theory & its errors Methods of correction LPF wattmeter
Phantom loading Induction type kWh meter – Induction type energy meter – Calibration of wattmeter.

UNIT III        POTENTIOMETERS & INSTRUMENT TRANSFORMERS                                           9
DC potentiometer – Basic circuit, standardization Laboratory type (Cromptons) AC potentiometer Drysdale (polar type) type Gall-Tinsley (coordinate) type Limitations & applications C.T and P.T construction, theory, operation and characteristics.

UNIT IV        RESISTANCE MEASUREMENT                                                                                  9
Measurement of low, medium & high resistance Ammeter, voltmeter method Wheatstone bridge
Kelvin double bridge Series and shunt type ohmmeter High resistance measurement Megger – Direct deflection methods Prices guard-wire method Earth resistance measurement.

UNIT V        IMPEDANCE MEASUREMENT                                                                                    9
A.C bridges Measurement of inductance, capacitance Q of coil Maxwell Bridge Weins bridge Schering bridge Anderson bridge Campbell bridge to measure mutual inductance Errors in A.C. bridge methods and their compensation Detectors Excited field A.C. galvanometer – Vibration galvanometer


TEXT BOOKS

L  = 45  T = 1Total = 60

1.    E.W. Golding & F.C.Widdis, Electrical Measurements & Measuring Instruments, A.H.Wheeler
& Co, 2001
2.    A.K. Sawhney, Electrical & Electronic Measurements and Instrumentation, Dhanpath Rai & Co
(P) Ltd, 2004.

REFERENCES
1.    J.B.Gupta, A Course in Electronic and Electrical Measurements and Instrumentation, S.K.
Kataria & Sons, Delhi, 2003.
2.    S.K.Singh, Industrial Instrumentation and control’, Tata McGraw Hill, 2nd   edn.,2002.
3.    H.S.Kalsi, Electronic Instrumentation, Tata McGraw Hill, 2004.
4.    Martin U. Reissland, Electrical Measurement Fundamental Concepts and  Applications, New
Age International (P) Ltd., 2001.









By Vinoth

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