COVENANT UNIVERSITY, CANAAN LAND, OTA.
GEC227 COURSE COMPACT
College: College of Science and Technology
School: School of Engineering and Technology
Department: Electrical and Information Engineering
Programme: Electrical and Electronics Engineering
Course Code: GEC227
Course Title: Electrical Measurements and Instrumentation
Units: 2
Course Lecturer: Mrs T.O. Takpor and Mr P.O. Iyamu
Semester: Omega
Session: 2014/2015
Time: Fridays (10am -12pm)
Location: Lecture Theater 1
Course Description:
Instrumentation systems including transducers, signal conditioners, and read out devices. Oscilloscope,
recorders, bridges, Measurement of voltage, current, resistance, impedance, frequency, phase
difference, electric power, energy, force, displacement, temperature, flow, pressure, and other
engineering parameters.
Course Objectives/Goals:
At the end of the course students are expected to:
 Have a thorough knowledge of electrical instrumentation measurement so as to adopt a
practical approach to measurement problems.
 Describe the types of instrument and know the importance of measurements in
Electrical and Information Engineering.
 Successfully measure electrical quantities and other line parameters (i.e. resistance,
capacitance and inductance) in terms of fundamental units.
 Analyze instrument error and determine the limit of uncertainty in physical
measurement.
 Identify, analyze and describe the potentiometer and Wheatstone bridge instruments to
determine the value of unknown quantity in measurement.
 Understand the principle and application of Wheatstone bridge.
 Identify and understand the general principle to obtain a balance in some classic
inductance and capacitance ac Wheatstone bridges.
 Describe with illustration, the principle of operation of dynamometer wattmeter for
measurement of power.
 Understand and explain the measurement of power in a single-phase circuit and the use
of three-phase wattmeter to measure three-phase circuit.
 Understand and explain the measurement of power in a three-phase circuit using Onewattmeter Method, Two-wattmeter method and Three-wattmeter method.
 State the advantages of electronic instruments in measuring technology.
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 Explain the elements of a digital acquisition system in the process of converting analog
signal to digital signal.
Methods of Lecture Delivery:
 Lectures will be delivered with the aid of multimedia power point presentation, and
static presentation (use of white board and marker).
 A combination of lectures and tutorials.
Course Outline:
Module 1
1.0 INTRODUCTION
1.1 Basics of measurements and instrumentation
1.1.1 Error in measurement
Week 1
Module 2
2.0 MEASUREMENT OF LINE PARAMETERS
2.1 Measurement of resistance
2.2 Measurement of low resistance
2.2.1 Ammeter/Voltmeter method
2.2.2 Potentiometer method
2.2.3 Kelvin Double Bridge
2.3 Measurement of medium resistance
2.3.1 Ammeter/Voltmeter method
2.3.2 Wheatstone bridge
2.3.2.1 Errors in bridge arms.
2.4 Measurement in high resistance
2.4.1 Modified Wheatstone Bridge
2.4.2 Loss of charge method
2.4.3 The Megger tester
2.5 Sensitivity of galvanometer
Week 2-4
Module 3
3.0 AC BRIDGES
3.1 Maxwell bridge
3.2 Desauity bridge (measuring capacitance)
3.3 Wien bridge
3.4 Schering bridge
3.5 Owen bridge
3.6 Heaviside bridge
Week 5-6
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Module 4
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
TRANSDUCERS
Piezoelectric transducer
Linear Variable Differential Transformer (LVDT)
Electrical resistance thermometer
Thermistors
Resistance strain gauge
Measurement of speed – Tachometer and digital Tachometer
Digital Transducer
Telemetry
Thermocouple
Week 7-8
Module 5
5.0
5.1
5.2
5.3
5.3.1
5.4
5.4.1
5.4.2
5.5
5.5.1
5.5.2
5.5.3
5.5.4
INDICATING INSTRUMENT AND APPLICATIONS
Moving Coil devices (Operation Principles, Features & Applications)
Moving Iron device (Operation Principles, Features & Applications)
Electrodynamics Instruments (Principle, Features and Applications)
As Ammeter, as a power factor meter, as moving-iron P.f meter
Energy meter and metering.
The Dynamometer wattmeter
The Induction-Type energy meter
Energy Meter - Measurement of power in single-phase circuit
Measurement of power in three-phase circuit using one-wattmeter method
Measurement of power in three-phase circuit using two-wattmeter method
Measurement of power in three-phase circuit using three-wattmeter method
Measurement of power in three-phase circuit using three –phase wattmeter
Week 8&9
Module 6
6.0
6.1
6.1.1
6.1.2
6.2
6.3
6.3.1
6.3.2
6.4
ELECTRONIC INSTRUMENTATION SYSTEM.
Digital instruments
Digital techniques measuring systems
Application of digital techniques to digital voltmeters (DVMs)
Analogue techniques
Analogue/digital (A/D) signal processing.
Sampling process
Analog-to-digital conversion (ADC)
Oscilloscope
Week 10-12
Tutorials:
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Tutorials class will be organized at the end of each course module and students are expected to
make contribution in solving tutorial questions.
Methods of grading:
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Continuous Assessments; Tests, Assignments and Group Project (30%)
Examination (70%)
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Ground rules and Regulations:
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Attendance is compulsory; a minimum of 75% class attendance is required.
Absolute concentration is required of all students during lectures.
Assignments / Group Project:
Assignments and Group Project will be given when necessary and students are expected to make
contribution during lecture hours.
Alignment with Covenant University Vision:
A thorough knowledge of electrical measurement and instrumentation system is essential to a
practicing engineer. Therefore the inclusion of this course in the undergraduate curriculum of
engineering students is important in forming the technical and scientific knowledge of future electrical,
computer and communication engineers. This course can be applied to basic measurement techniques,
instruments, and methods used in everyday practice. It is valuable to the raising of new generation
leaders in electrical, computer and communications engineering fields.
Contemporary issues / Industry relevance:
Electrical Measurements and Instrumentation is primarily intended to assist the student following an
electrical or electronic engineering degree course to adopt a practical approach to his measurement
problems. It will also be of use to an industrial engineer, who finds himself involved with
measurements in terms of volts, amperes, ohms, watts, etc., and faced with an ever-increasing variety
of instruments from a simple pointer instrument to a complex computer-controlled system. The course
is aimed at practical conditions and situations. It helps the engineer or instrument user, to select the
right form of instrument for an application, and then analyze the performance of the competitive
instruments from the various manufacturers in order to obtain the optimum instrument performance for
each measurement situation.
Recommended Textbooks:
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Sawhney, A.K., A Course in Electrical and Electronic Measurements and Instrumentation,
Dhanpai Rai and Co, Naisarak, Delhi, 2008.
Alan Symonds, Electrical Power Equipment and Measurements, MicGraw-Hill Companies
(UK), latest edition
Gupta, J.B., An Integrated course in Electrical Engineering, 4th edition, S.K. Kataria and Sons,
New Delhi, 2010
Salawu, R.I., Principle of Electrical Engineering and Measurements, latest edition.
U.A. Bakshi, A.V. Bakshi, K.A. Bakshi, Electrical Measurements, First Edition: 2008
Roman Malaric, Instrumentation and Measurement In Electrical Engineering, 2011
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