Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 6th Sem Old 160905 Electrical And Electronic Measurement Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI (OLD) EXAMINATION ? WINTER 2018
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.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Explain Anderson?s bridge with vector diagram. 07
(b) Explain the following terms,
1. Sensitivity 2. Accuracy 3. Drift 4. Precision
5. Linearity 6. Resolution 7. Stability
07
Q.2 (a) Give classification of errors in detail. 07
(b) Explain Hay?s Bridge for measurement of self-inductance. 07
OR
(b) Derive the equation of unknown resistance of Kelvin?s double bridge under
balanced condition.
07
Q.3 (a) Write short note on Megger. 07
(b) Explain Schering Bridge with diagram. 07
OR
Q.3 (a) Usages of Wein?s Bridge and derive the expression of frequency in terms of its
Parameters.
07
(b) What are the different difficulties encountered in the measurement of high
resistance? Explain how these difficulties are over come.
07
Q.4 (a) Explain the working of CT with neat circuit diagram and phasor diagram. 07
(b) Explain the working of Crompton?s potentiometer. 07
OR
Q.4 (a) Explain Murray loop test to determine the location of cable fault. 07
(b) Why instrument transformer is required? justify the statement ?Never open
secondary winding circuit of a current transformer while its primary winding is
energized ??.
07
Q.5 (a) Explain harmonic distortion analyzer. 07
(b) Describe the method of determination of B-H curve of a magnetic material using
method of reversals.
07
OR
Q.5 (a) Derive equation for ratio and phase angle error of a potential transformer. 07
(b) Explain frequency selective wave analyzer with block diagram. 07
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This post was last modified on 20 February 2020