Download GTU BE/B.Tech 2017 Winter 7th Sem New 2170913 Industrial Instrumentation Departmental Elective Ii Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII (NEW) EXAMINATION — WINTER 2017

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Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.

Figures to the right indicate full marks.

Q.1 (a) What is electrical transducer? Explain its advantages. 03

(b) Differentiate between the following with suitable examples of each: 04

1. Active and Passive Transducer.

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2. Primary and Secondary Transducer

(c) Explain the following characteristics of a Transducer. 07

1. Precision
2. Resolution
3. Sensitivity

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4. Threshold
5. Repeatability
6. Accuracy
7. Hysteresis.

Q.2 (a) How is the temperature compensation carried out using strain gauge in a bridge circuit? 03

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(b) Describe the construction, working principle of Hall effect transducers. 04

(c) What is Gauge factor? Derive the expression for Gauge factor in terms of Poisson’s ratio. 07

OR

(c) Explain the construction and working of Piezoelectric transducer. Also derive output equation. 07

Q.3 (a) Define Force and Name different types of electrical force sensors. 03

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(b) Explain Proximity Torque sensor. 04

(c) Explain construction and working principle of L.V.D.T. with its characteristics. 07

OR

Q.3 (a) Explain Construction and Working of Bourdon Tube. 03

(b) Explain Variable Dielectric Constant method for measurement of Liquid level using capacitive transducer. 04

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(c) Explain proving ring type load cell with its Advantages. 07

Q.4 (a) Define the following (1) Absolute Pressure (11) Gauge Pressure (iii) Differential Pressure. 03

(b) Explain Capacitive Pressure Transducer. 04

(c) With a neat sketch explain the construction and working of Rotameter. 07

OR

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Q.4 (a) Describe working principle of Electro-magnetic type flow meter, with its merit and demerits. 03

(b) Explain flow measurement technique using Hot Wire Anemometer. 04

(c) Explain with neat sketch, how McLeod pressure gauge measure vacuum pressure. 07

Q.5 (a) State Advantages and Disadvantages of Optical Pyrometer. 03

(b) Explain the operation of Sample and Hold circuit in brief. 04

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(c) Explain RTD with diagram, construction, principle, working, merits, 07

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Q.5 (a) Explain Advantages and Disadvantages of Thermistor. 03

(b) Explain the different components of an Analog Data Acquisition System. 04

(c) Describe the construction, theory and working principle of thermocouples. Describe different types of compensations used . 07

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