Download GTU BE/B.Tech 2019 Summer 6th Sem New 2162005 Electro Mechanical Measurements And Instruments Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 6th Sem New 2162005 Electro Mechanical Measurements And Instruments Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2162005 Date:16/05/2019
Subject Name:Electro Mechanical Measurements & Instruments
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Explain static correction. 03
(b) Differentiate between Reproducibility and Repeatability. 04
(c) Explain how the current and voltage range of PMMC type instruments
extended with the help of shunts and multipliers and draw neat sketches.
07
Q.2 (a) Define: Accuracy, Transducer and See back Effect. 03
(b) Compare Quarter bridge and Half bridge circuits for resistive strain gauges. 04
(c) Classify the errors in measurement with its remedies. 07
OR
(c) Explain the ?Fall of Potential? method for measurement of earth resistance with
neat sketch.
07
Q.3 (a) Define: (1) Hysteresis (2) Threshold (3) Sensitivity. 03
(b) Explain the following terms with neat sketch. (1) Overshoot (2) Fidelity 04
(c) Differentiate between mechanical and electrical instruments. 07
OR
Q.3 (a) Explain Drift with suitable examples. 03
(b) Formulate the governing equation for a second order system with spring-mass
and damping
04
(c) Explain Seismic Transducer. 07
Q.4 (a) What is Piezoelectric effect? 03
(b) A strain gauge bridge consists of two fixed 100 ? resistor, one active gauge
and one unstained temperature compensating gauge connected in adjacent
arms. The two gauge have an unstrained resistance of 100 ? each and a G.F
= 2.1.calculate the strain which would be represented by 80000 ? calibraium
resistance.
04
(c) Classify Telemetry system also explain current telemetering system and draw
block diagram of general telemetry system.
07

OR
Q.4 (a) Define passive and active transducers with example. 03
(b) Discuss any one application of D.C. potentiometer. 04
(c) Discuss the advantages and disadvantages of LVDT/RVDT with its remedies. 07
Q.5 (a) Explain briefly Voltage-Current characteristic of thermistor. 03
(b) Explain Electrical Tachometer. 04
(c) Briefly explain zero, first and second order systems giving suitable examples and
governing equations.
07
OR

Q.5 (a) What is load cell? 03
(b) Explain mechanical tachometer with neat sketch. 04
(c) Discuss the importance of A/D and D/A circuits in digital data acquisition
system.
07

*************
FirstRanker.com - FirstRanker's Choice