Electronic Instruments and Measurements - May 2014

Electronics & Telecomm. (Semester 3)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks. 1 (a) Define transducer and explain the classification of transducer(5 marks) 1 (b) Explain with diagram principle of operation of frequency selective wave analyzer.(5 marks) 1 (c) Write applications of Q meter(5 marks) 1 (d) Describe various types of sweeps used in CRO(5 marks) 2 (a) Explain the principal of operation of dual slope DVM.(10 marks) 2 (b) Explain with neat diagram working principle of LVDT. Give its applications(10 marks) 3 (a) Explain various types of errors in measurement in detail.(10 marks) 3 (b) Explain with example working of successive approximation type ADC.(10 marks) 4 (a) Explain in detail? Resistance strain gauges:(10 marks) 4 (b) Compare the temperature transducers RTD, thermistors and thermocouples on the basis of principle, characteristics, ranges and applications.(10 marks) 5 (a) Explain performance characteristics of D/A converters(10 marks) 5 (b) Explain the significance of 3-1/2 and 4-1/2 digit displays 3-1/2 Digit Display:(10 marks) 6 (a) Draw and explain block diagram of digital storage oscilloscope and mention the modes of operation of DSO(10 marks) 6 (b) Explain electrodynamometer type wattmeter(10 marks)