| MINISTRY OF MANPOWER NIZWA COLLEGE OF TECHNOLOGY Engineering Department FINAL ASSIGNMENT: Semester-2, 2019-20 EEPW 2320 : Instrumentation & Measurement Techniques |
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| Instructions to the Students | |
| 1. The Final Assignment will be available in Moodle at 9:00 am on the date of examination. 2. This is an open resource examination; there are (3) pages. Students are allowed to refer any digital materials (Internet, Proquest, Masader, and OER) with proper referencing and citation for each answers. 3. Students has to answer the questions typewritten in the word (.docx) format. Figures / Diagrams, equations and solving of problems can be written by hand and added to the document as a picture/image. 4. Save the assignment file using the student ID & Course code.[ Example : 22s1234 – EEPW2320] 5. Students should submit the answers through the turnitin link provided in moodle page. If any problem occurs, send it to the course tutor email [Email address : gobi.sivasubramanian@nct.edu.om ] 6. Students are encouraged to upload the answers in the moodle at least two hours before the deadline to avoid any technical issues. 7. In case of any technical problem in opening or submitting your assignment please contact your course tutor through email and copy to the Department Head. 8. Any form of cheating is punishable. Students involved in cheating will be treated according to the Plagiarism and Academic Integrity Policies. 9. Students are advised to write the answers in their own words. Based on the plagiarism policy and the department approved similarity level, the marks will be deducted for the plagiarized [Copied] answers. 10. Students should complete their assignment within the given time. Assignments submitted after the deadline will be marked 0. |
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| QUESTIONS [ ANSWER ALL THE QUESTIONS] EACH QUESTION CARRIES 5 MARKS | |
| 1 | A dates syrup company in Oman uses a special industrial drive which consists of an induction motor. As the drive seems to be the main component of the company, it becomes mandatory to measure its voltage, current, resistance etc. more frequently in an accurate way. A meter is used to measure the above electrical quantities, may affect the induction motor performance under test. Also meter will affect the circuit measurements due to loading effect. Choose a suitable meter for the measurement of various electrical quantities and explain it with neat diagram. |
| 2 | Digital imaging procedures are finding increasing application in diagnostic cardiologist. As a result, a display device has become an integral part of the diagnostic cardiologist department. Efforts are underway to investigate the suitability of high-resolution display device for diagnosis by the cardiologist. Initial results appear to be encouraging. Initial results show that the display device falls short in key performance features such as the maximum luminance, veiling glare (scatter in the glass faceplate) that reduces the modulation transfer, the number of resolvable picture elements, which is smaller than the number of addressable locations on the fluorescent screen, spatial noise (phosphor granularity) is limiting the low-contrast detectability, and dynamic range. With neat diagram explain the construction and operation of a display device. |
| 3 | The production engineer in Ibri chemical factory needs a complete measurement setup to maintain the chemical phenol at -26 °C. Choose a negative temperature coefficient sensor and explain its construction and operation with neat diagram. |
| 4 | The pressure mat is used to measure sitting discomfort in aircraft passenger seats. The pressure mat monitor real time surface pressure monitoring from the occupant when seated. Piezo -resistive sensor is used as a sensing element. The discrete pressure data is used to map the pressure distribution from the backrest and to compute the seat’s cushion deflection and corresponding backrest contour caused by the passenger’s weight. The sensor mat contains a total of 72 sensing elements arranged in an evenly distributed pattern. The arrangement of the sensors focuses on 4 distinct areas of the backrest for an aircraft passenger seat. Explain the importance of the standardization procedure with particular attention in increasing the repeatability of the measurements and reducing drift and hysteresis in pressure mat. |
| 5 | In a transformer manufacturing industry, inductance of the coil is to be measured before installing. The quality factor of the coil is 5.6. Choose a suitable bridge circuit to measure the inductance. Also explain the bridge circuit in detail with neat schematic diagram. |
| 6 | Consider that the electrical machines laboratory in your college is equipped with only analog meters. You are in the position to perform the Open Circuit characteristics of DC generator experiment. List out the meters need for that and explain the operation of any one of the meter with neat diagram. |
| 9 | In electrical machines laboratory, only analog meters are available. To conduct the Open Circuit test on a single phase transformer, several meters are needed. List down the meters needed and explain the operation of the meter connected to the secondary with neat diagram. |
| 10 | A newly manufactured ammeter in a company has to be tested before delivering to sales department. The testing of meter includes the analysis of static characteristics which is done by quality control department in the company. Discuss the static characteristics in detail. |
