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Electronic Instruments And Measurements Question Paper - Jun 19 - Electronics Engineering (Semester 3) - Mumbai University (MU)
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Electronic Instruments And Measurements - Jun 19

Electronics Engineering (Semester 3)

Total marks: 80
Total time: 3 Hours
INSTRUCTIONS
(1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Draw neat diagrams wherever necessary.

Attempt any 4

1.a. Explain precision and resolution for electronic equipments.

(5 marks) 00

1.b. Draw a neat circuit diagram of LCR – Q meter & explain its operating principle.
(5 marks) 00

1.d. Describe operating principle of harmonic distortion analyzer with a neat block diagram
(5 marks) 00

1.e. With a neat diagram, explain the principle of digital time measurement.
(5 marks) 00

2.a. A set of independent current measurements were recorded as 10.03,10.10,10.11,10.08 A. Calculate a) Average current b) Range of error.
(10 marks) 00

2.b. List and discuss operations and applications of Kelvin bridge.
(10 marks) 00

3.a. Draw the block diagram of CRO and explain its operation. State specifications of CRO.
(10 marks) 00

3.b. Explain how Lissajous patterns / figures are used for measurement of an unknown frequency & shift using a cathode ray oscilloscope (CRO).
(10 marks) 00

4.a. Draw the circuit diagram and explain the operation of bridge used to measure capacitance.
(10 marks) 00

4.b. Explain various features of digital storage oscilloscope.
(10 marks) 00

5.a. Draw the neat diagram and explain the operation of dual slope type DVM.
(10 marks) 00

5.b. In a food processing unit, a highly acidic solution is stored in a storage tank where its level has to be continuously monitored round the clock. Your supervisor suggests that dude to highly acidic nature of the solution, a non-contact transducer should be used for the level measurement. Which transducer will you use for above application? Describe its operation with a neat diagram.
(10 marks) 00

6.a. Draw the diagram and explain the operation of Rotameter.
(10 marks) 00

6.b. Explain the operation of linear variable differential transformer. What is residual voltage?
(5 marks) 00

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