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1 Set No (a) Differentiate among Desired, Modifying and Interfering inputs. (b) How do you eliminate the effects of interfering and modifying inputs? Explain 2. (a) Define the term Transducer and explain why the output of a transducer should be in electrical form? (b) Explain the Thermo Couple laws and also their practical significance. 3. Explain, with neat sketches the construction and working principle of Mc Leod and Ionization gauges. 4. (a) Describe the Principle of operation construction details, advantages disadvantages and limitations of an Electromagnetic flow meter. (b) Briefly explain the Buoyancy force type and Bubbler purge type level indicators. 5. (a) Explain the principle of operation of AC Tachometer generator with a neat sketch. (b) Describe the basic concept of Seismic instrument and explain how it can be used for Acceleration measurement. 6. (a) Differentiate between Strain Gauge and Strain gauge rosette. (b) Derive an Equation for un- balanced voltage of Wheatstone bridge and explain how the sensitivity varies with number of arms made active. 7. (a) How do you measure the moisture content of gases? Explain with a neat sketch. (b) How do you classify dynamometers? Explain any one type of dynamometers. 8. (a) Differentiate between Closed loop and Open loop Control systems with examples. (b) What is a servomechanism? Explain. 1 of 1
2 Set No (a) What do you mean by static calibration? Differentiate between Threshold and Resolution". (b) Draw the generalized Input- Output configuration of an Instrumentation system and Explain. 2. (a) What do you mean by Piezo electric effect? What are the applications of Piezo electric effect? (b) Explain the principle of operation of the following devices for displacement measurement with neat sketches: (i) LVDT and (ii) Capacitive type 3. Explain with neat sketches the construction and working principle of Mc Leod and Ionization gauges for low (vacuum) Pressure measurement. 4. (a) What is hot wire Anemometer? Explain its working with neat sketch. (b) Describe the working of electrical resistance and bubbler purge type level indicators. 5. (a) Derive an expression for the output of a seismic instrument. Indicate when the output measures the (i) acceleration and (ii) amplitude of the input quantity. (b) Compare AC and DC Tachometers with neat sketches. 1 of 2
3 6. (a) How do you classify Strain gauges? What do you mean by Gauge Factor? (b) Explain the method of measuring force using Strain gauges. 7. (a) Define the various terms related to humidity and explain the working of any one absorption hygrometer. (b) Explain the principle of working of Load Cells using Strain gauges. 8. Write short notes on the following: (a) Closed loop Control System. (b) Transfer Function and (c) Position control system. 2 of 2 Set No. 2
4 Set No a) How do you classify the Measurement Systems? (b) What do you mean by functional elements? Explain one such scheme of dividing an instrument into Functional elements with example. 2. (a) What are the various ways in which variation in Capacitance principle can be used to construct displacement transducers? Explain with neat sketches. (b) With the help of a neat sketch explain the working of an optical Pyrometer. 3. (a) Describe the measurement of absolute and differential pressure using bellows gauges. (b) Explain the principle of working of Pirani gauge for low pressure measurement. 4. (a) Explain the working of Laser Doppler Anemometer (LDA). (b) Describe the working of Pneumatic and Capacitor type level indicators. 5. (a) With the help of neat sketches explain the working of any Two non contact type Tachometers. (b) What is the basic difference in design and application between Vibrometer and Accelerometer. 6. (a) Briefly explain different methods employed to measure torque. (b) Explain the working of transmission type dynamometer. 7. (a) What is gauge factor of Strain gauges? Write brief note on fixing a stain gauge. (b) Derive an expression for the change in the output of a Wheatstone bridge circuit. How do you account for temperature compensation? 8. Write Short notes on: (a) Speed control and (b) Temperature control. 1 of 1
5 Set No (a) What is a Transducer? Explain why the output of a transducer should be in electrical form? (b) Explain briefly: i) Static Sensitivity, ii) Threshold and Resolution. 2. (a) Explain the principle of operation of the following displacement measuring transducers: i) Light Dependent Transducer(LDR) and ii) Photo Electric type. (b) Explain the Thermo Couple laws and also their practical significance. 3. (a) Explain the working of a very high pressure measuring device (Bridgeman gauge). (b) Enumerate the various manometers that exist and explain the working of any one manometer with neat sketch. 4. (a) Describe the principle of operation of Ultrasonic and electrical resistance type level indicators. (b) With the help of a neat sketch explain the principle of operation of Turbine flow meter. 5. (a) Describe the working of Dc tachometer generators and Stroboscopes. (b) Why and how vibrations are measured? 1 of 2
6 Set No (a) What do you mean by bonded and unbounded Strain gauges? Explain. (b) Explain how bending compressive and tensile strains can be measured by strain gauges. 7. (a) Explain the working of Hydraulic and Pneumatic Load Cells. (b) Explain one method of measurement of moisture content of gases. 8. (a) With suitable examples, bring out the advantages of closed loop systems over open loop systems (b) Explain why negative feedback is invariably preferred in closed loop systems? 2 of 2
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