Gujarat Technological University 2011-7th Sem B.E Electrical Engineering , Industrial Instrumentation - Question Paper

GUJARAT TECHNOLOGICAL UNIVERSITY
BE SEM-7 Examination-Nov/Dec.-2011
Date:26/11/2011
Total Marks:70
Subject code:170904
Subject Name:Industrial Instrumentation

Q-1(a) describe Transducer and classify Transducer on various basis.
(b) define with neat sketches construction & working of LVDT with its merit and demerit. Also draw output characteristic.
Q-2(a) What is piezo-resistive effect ? discuss term Gauge factor with respect to resistance strain guage and find expression in terms of poission's ratio.
(b) describe subsequent terms:
1) Hystersis 2)Reproducibility 3) Resolution
4)Accuracy 5)Dead zone 6) Drift
7)Sensitivity 8)Gauge pressure 9) Absolute pressure
10) static pressure
OR
(b) discuss temperature compensation in strain guage using dummy gauge.
Q-3(a) discuss working of Hall effect Transducer. Also state its application.
(b)What is torque ? State various tyupes of torque measurement technique & discuss any 1 in brief.
OR
Q-3(a) What is load cell ? discuss proving ring and Hydralic load cell.
(b) discuss measurement of vacuume pressure using pirani gauge.
Q-4(a)With neat sketch discuss construction & working ofRota meter.
(b) discuss working of Ultrasonic level detector.
OR
Q-4(a) discuss flow measurement technique using hot wire anemometer.
(b) define construction & working principle of thermocouple.
Q-5(a) discuss resisatnce temperature Detector with its merit & demerit.
(b)Explain construction & working of X-Y recorder.
OR
Q-5(a) discuss construction & working of optical pyrometer.
(b) Draw a generalized diagram of digital data acquisition system and discuss every component briefly. Also mention the essential functional operations of it.

Earning:   Approval pending.