12070 21314 3 Hours / 100 Marks Instructions – Seat No. (1) All Questions are Compulsory. (2) Answer each next main Question on a new page. (3) Illustrate your answers with neat sketches wherever necessary. (4) Figures to the right indicate full marks. (5) Assume suitable data, if necessary. (6) Mobile Phone, Pager and any other Electronic Communication devices are not permissible in Examination Hall. Marks Attempt any TEN of the following: 1. 20 a) Define transducer give two examples. b) State peltier effect and seeback effect c) Write the materials used in hygrometer. d) Draw the figure showing zero pressure atmospheric pressure, gauge pressure and absolute pressure. e) Differentiate laminar flow and turbulent flow on the basis of Reynold’s number. f) State application of electromagnetic flowmeter (Any four) g) List different types of level sensors. P.T.O. 12070 [2] Marks h) What are the advantages of capacitive level measurement (Any four). i) List any four selection criteria transducer. j) Name different types of manometer. k) Define : l) i) Relative humidity ii) Absolute humidity List different types of elastic pressure transducer. m) State the types of orifice plates. n) State two advantages and disadvantages of magnetic pick-up tachometer. Attempt any FOUR of the following: 2. a) Draw block diagram of X-Y recorder. b) Describe working principle of corollis mass flowmeter with diagram. c) Explain with the help of neat sketch float type level measurement. d) Draw the diagram of inclined tube manometer and state its advantages. e) Describe hair hygrometer with neat diagram. f) Differentiate between RTD and Thermistor. (4 main points) 16 12070 [3] Marks Attempt any FOUR of the following: 3. 16 a) Draw block diagram of instrumentation system and state the function of each element used in it. b) Draw diagram of Bourdon tube, Bellows write the range of each. c) Explain with neat sketch radiation type level measurement. d) Compare contact type and non-contact type speed measurement technics. e) Classify recorders and state advantages galvanometer type strip chart recorder. f) 4. List different temperature scales. Define steam point and ice point. Attempt any TWO of the following: 16 a) Describe construction and working principle of piezo electric transducer. Write the material and two application. b) Describe working principle along with construction figure of rotameter. State its advantages and application. c) What is pyrometry? Classify pyrometer. Describe working of optical pyrometer with diagram. P.T.O. 12070 [4] Marks Attempt any FOUR of the following: 5. 16 a) Describe level measurement using ultrasonic method. b) What is strain gauge? Explain unbonded strain gauge with diagram. c) Explain the use of dead weight tester with diagram. d) State the principle and explain working of bimetallic thermometer. e) Describe the working of nutating disc meter with diagram. f) 6. Differentiate between AC and DC techogenerator. Attempt any TWO of the following: a) Describe working principle of gas filled thermometer with neat diagram and state its advantages and disadvantages. b) Describe construction and working of Doppler flowmeter with advantages and application. c) What is the principle of Hydrostatic type level measurement. Describe level measurement by air purge system. 16 12070 21314 3 Hours / 100 Marks
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