Download GTU BE/B.Tech 2019 Summer 3rd Sem Old 130903 Electrical And Electronics Measuring Instruments Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 3rd Sem Old 130903 Electrical And Electronics Measuring Instruments Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? III(OLD) EXAMINATION ? SUMMER 2019
Subject Code: 130903 Date: 18/06/2019

Subject Name: Electrical And Electronics Measuring Instruments

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) Define and explain: (i) Precision (ii) Accuracy (iii) Sensitivity (iv) Resolution
(v) Drift (vi) Repeatability (vii) Error.
07
(b) Explain the voltage standards. 07

Q.2 (a) Describe the construction and working of PMMC instrument. 07
(b) Differentiate between spring control and gravity control methods used to
produce the controlling torque.
07
OR
(b) Explain construction working of D?Arsonval galvanometer. Also derive its
torque equation.
07

Q.3 (a) Discuss the methods by which range of ammeter and voltmeter can be
extended.
07
(b) Give brief note on digital tachometer. 07
OR
Q.3 (a) Sketch and explain the construction and working of attracted disc type
Kelvin absolute electrometer.
07
(b) Explain the various factors which are taken in to consideration while selecting
an electronic type analog voltmeter.
07

Q.4 (a) Explain the electrodynamometer type wattmeter. 07
(b) Draw the circuit diagram of a Crompton?s Potentiometer & explain its
working. Describe the steps used when measuring an unknown resistance.
07
OR
Q.4 (a) Differentiate AC and DC potentiometers. 07
(b) Describe the constructional detail of single phase induction type energy meter. 07

Q.5 (a) Write a short note on Weston frequency meter. 07
(b) Discuss the types of errors. Explain the causes of various types of errors. 07
OR

Q.5 (a) Write a short note on single phase electrodynamometer type power factor
meter.
07
(b) Explain construction and working of a maximum demand indicator. 07

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