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Electrical Measurements
Scholar Year: 2018/2019 - 1S
| Code: |
ARCI14 |
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Acronym: |
ME |
| Scientific Fields: |
Eletrónica e Automação |
Courses
| Acronym |
N. of students |
Study plan |
Curricular year |
ECTS |
Contact time |
Total Time |
| ARCIL |
20 |
|
2º |
3,0 |
|
81,0 |
| TSPARC |
19 |
|
2º |
3,0 |
|
81,0 |
Teaching language
Portuguese
Intended learning outcomes (Knowledges, skills and competencies to be developed by the students)
Upon completion of this course, students should be able to:
1) To know the principles and procedures of measurement of the main electrical quantities (voltage, current, resistance, power and energy);
2) Understand the principle of operation of the main instruments of measurement of electrical quantities (analog and digital multimeters, analog and digital oscilloscopes, wattmeters and energy meters);
3) Connect and correctly operate the main measuring instruments of electrical quantities.
Syllabus
Chapter 1. Fundamentals of Measurement: introduction; international metrology vocabulary; errors (accuracy of analog and digital instruments, zero mismatch, parallax error, limited bandwidth, significant digits); standards of measurement.
Chapter 2. Instruments Analog Indicators: introduction; moving frame instrument (ammeter, voltmeter, ohmmeter, use of alternating rectifiers); electrodynamic instrument (ammeter, voltmeter and wattmeter); Thermal insulation.
Chapter 3. Digital Multimeter: Introduction; voltage, current and resistance measurements; A / D conversion.
Chapter 4. Oscilloscope: introduction; main commands; principle of operation of the analog oscilloscope; operating principle of the digital oscilloscope by sampling; oscilloscope connection (probes and earthing); measurement techniques.
Chapter 5. Electrical Measurements: procedures for measuring voltage, current, resistance (4-wire resistance, insulation resistance and earth resistance), power (Aron method) and energy; extension of measurement scope.
Demonstration of the syllabus coherence with the UC intended learning outcomes
The program contents focus on the main instruments and techniques of measurement of electrical quantities, taking into account the target public and the limitations in terms of time and laboratory conditions.
Teaching methodologies
The teaching methodology is based on theoretical-practical classes used to expose the syllabus content and to solve practical problems demonstrating the given subject.
Some demonstrations and laboratory classes are planned for students to perform some assemblies with the measuring instruments, namely analog and digital multimeters, signal generators and oscilloscopes.
Students will take work to do at home, in the form of a series of problems, to keep a permanent follow up with the discipline and to strengthen their autonomous work capacity.
Demonstration of the teaching methodologies coherence with the curricular unit's intended learning outcomes
The theoretical-practical classes and the homework will provide the necessary knowledge so that the student understands the main instruments and techniques of measurement of electrical quantities. Laboratory demonstrations will help the student to properly connect and operate electrical measurement instruments.
Assessment methodologies and evidences
Evaluation Methodology
Modes of Evaluation
The use of this curricular unit can be obtained through two evaluation methods: continuous assessment or examination evaluation.
Continuous evaluation
The continuous evaluation includes the accomplishment of 2 tests each having a weight of 50% in the final mark. The tests are solved by the students individually, without consultation, and during class time. Access to any of the tests requires attendance of at least 85% of classes. After the end of the school year there is a period of continuous assessment recovery and a one-time exam time. The recovery of the continuous evaluation is not used to make improvement of grade and the student only accedes to the recovery if it has obtained a classification inferior to 10 values, being able in this case to improve only the note of one of the two tests.
Exam Evaluation
Students who choose not to take the continuous assessment, or who opted for it, have not obtained approval, may take the exam. The exam is solved by the students individually, without consultation, in the room and date indicated by the Pedagogical Council.
Calculation of final grade
In the case of continuous assessment, the final grade corresponds to the weighted sum of the marks obtained in each of the continuous assessment moments:
NF = 0.5 * T1 + 0.5 * T2
where T1 and T2 represent the classifications that the student obtained in each of the continuous assessment tests.
In the case of the examination evaluation, the final grade corresponds to the grade obtained in this exam.
Improvement of final grade distributed
The student can improve his final grade obtained by continuous assessment by taking the exam.
Attendance system
Evaluation Methodology
Modes of Evaluation
The use of this curricular unit can be obtained through two evaluation methods: continuous assessment or examination evaluation.
Access to the written test of continuous assessment requires attendance of at least 85% of classes.
Bibliography
Aurélio Campilho, Electronic Instrumentation - Methods and Techniques of Measurement, Editions FEUP, 2000.
General Direction of Quality, "International Vocabulary of Metrology", Lisbon 1985.
Observations
Frequency and passing in this discipline assumes that students have basic knowledge of electrical engineering.
(Omitted issues respect the legal legislation in force and the internal rules and regulations of the management bodies of ESTSetúbal / IPS).
Time of doubt:
4:00 p.m. 9: 00-10: 30
Planned dates of continuous assessment moments:
T1 - December 3, 2018;
T2 - January 21, 2019.
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