Wednesday, June 27, 2012
EI2202 ELECTRICAL MEASUREMENTS Syllabus - EIE 3rd Semester - Anna University
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EI2202
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ELECTRICAL MEASUREMENTS
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L
T P C
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|
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(Common to EIE &
ICE)
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3
1 0 4
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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 (Crompton’s) – 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 – Price’s guard-wire method – Earth resistance measurement.
UNIT V
IMPEDANCE MEASUREMENT
9
A.C bridges – Measurement of inductance, capacitance – Q of coil – Maxwell Bridge – Wein’s 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 = 15 Total = 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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