Question Paper: Transducers - 1 : Question Paper May 2015 - Instrumentation Engg. (Semester 3) | Mumbai University (MU)
0

## Transducers - 1 - May 2015

### Instrumentation Engg. (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) Classify transducers with suitable example.(5 marks) 1 (b) Define
i) Accuracy
ii) Sensitivity
(5 marks)
1 (c) Explain working principle of-
i) Piezo electric transducers
ii) Piezo resistive transducers
(5 marks)
1 (d) Find seeback voltage for a thermocouple with proportionality constant of 40μV/°C if the junction temperatures are 40°C and 80°C.(5 marks) 2 (a) Draw and explain working of LVDT. What causes residual voltage to occur?(10 marks) 2 (b) A voltmeter having a sensitivity of 1000Ω/V reads 100V on its 150V scale when connected across an unknown resistor in series with milliammeter. When milliammeter reads 5 mA, calculate
i) Actual resistance of the unknown resistor.