Electronic Instruments and Measurements - May 2015

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.

Attempt any five:

1 (a) Significance of three and half digit display. (4 marks)

1 (b) Define accuracy, precision and sensitivity with suitable example. (4 marks)

1 (c) Explain working of strain gauge and its application in load measurement. (4 marks)

1 (d) List various sensors for pressure and temperature along with their ranges. (4 marks)

1 (e) Define types of error and methods of minimization. (4 marks)

2 (a) Draw and explain working of capacitive transducer for level measurement. (10 marks)

2 (b) Draw neat block diagram of CRO and explain its functioning, comment on role of sweep in CRO. (10 marks)

3 (a) Draw and explain R-2R ladder network DAC for 3 bits input taking suitable example. (10 marks)

3 (b) Explain Kelvin's double bridge and its application in very low resistance measurement. (10 marks)

4 (a) Explain SAR OR Flash type ADC with the help of block diagram and comment on its speed. (10 marks)

4 (b) Explain LVDT and define its application in displacement measurement. (10 marks)

5 (a) Explain Heterodyne type waves analyser and its applications. (10 marks)

5 (b) Discuss DSO with the help of block diagram along with various modes of operation also explain its applications. (10 marks)

6 (a) Draw and discuss Hey Bridge and its application for measurement of inductance. (10 marks)

6 (b) Define power and energy and explain working of an energy meter. (10 marks)