Download GTU BE/B.Tech 2018 Winter 6th Sem Old 160905 Electrical And Electronic Measurement Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER-VI (OLD) EXAMINATION - WINTER 2018

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Subject Code: 160905 Date: 20/11/2018

Subject Name: Electrical & Electronic Measurement

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

1. (a) Explain Anderson’s bridge with vector diagram. [07]
   (b) Explain the following terms: [07]
   1. Sensitivity 2. Accuracy 3. Drift 4. Precision
   

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   5. Linearity 6. Resolution 7. Stability
2. (a) Give classification of errors in detail. [07]
   (b) Explain Hay’s Bridge for measurement of self-inductance. [07]
3. (a) OR Derive the equation of unknown resistance of Kelvin’s double bridge under balanced condition. [07]
   (b) Write short note on Megger. [07]

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4. (a) Explain Schering Bridge with diagram. [07]
   (b) OR Usages of Wein’s Bridge and derive the expression of frequency in terms of its Parameters. [07]
5. (a) What are the different difficulties encountered in the measurement of high resistance? Explain how these difficulties are overcome. [07]
   (b) Explain the working of CT with neat circuit diagram and phasor diagram. [07]
6. (a) Explain the working of Crompton’s potentiometer. [07]
   

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   (b) OR Explain Murray loop test to determine the location of cable fault. [07]
7. (a) Why instrument transformer is required? Justify the statement “Never open secondary winding circuit of a current transformer while its primary winding is energized”. [07]
   (b) Explain harmonic distortion analyzer. [07]
8. (a) Describe the method of determination of B-H curve of a magnetic material using method of reversals. [07]
   (b) OR Derive equation for ratio and phase angle error of a potential transformer. [07]

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9. (a) Explain frequency selective wave analyzer with block diagram. [07]