Omran Company In Oman

MINISTRY OF MANPOWER NIZWA COLLEGE OF TECHNOLOGY

Engineering Department

FINAL ASSIGNMENT: Semester-2, 2019-20 EEPW 2320 : Instrumentation & Measurement Techniques

Date & Time of Upload

07.05.2020 9.00 AM

Submission Deadline & Date

09.05.2020 08.00 AM

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 : [email protected] ]

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.

Final Assignment

Page 2 of 3

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.

Final Assignment

Page 3 of 3

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.

7 A sensor used to measure the temperature produces a very small emf. The tip and gauge head is

maintained at two different temperatures. The gauge head is maintained at 32 °C. The voltage output is

7000 µV. Calculate the tip temperature and explain the operation of the sensor which you identified with

neat diagram. ( choose a= 0.04; b= 9x10-6 )

8 In a 66kV/11KV substation in Nizwa, it is often to measure high voltage and high current to ensure the

operation reliability by the maintenance Engineer and the report is to be submitted to Chief Engineer.

Choose suitable instruments to measure the high voltage and high current and the explain its operation

with neat schematic 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.