MU Electronics Engineering (Semester 3)
Electronic Instruments and Measurements
December 2014
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


Solve All:-
1 (a) Draw and explain the working of practical Q-meter circuit.
5 M
1 (b) Define the following terms:
i) Accuracy
ii) Resolution
iii) Hysteresis
iv) Calibration
v) Sensitivity
5 M
1 (c) Estimate the bandwidth of CRO if a signal of 12 milisecond rise time is observed as the signal with 15 millisecond rise time.
5 M
1 (d) Draw and explain the McLeod gauge for pressure measurement.
5 M

2 (a) Write short note on "Programmable logic controller".
10 M
2 (b) Draw and explain the turbine flow meter.
10 M

3 (a) Explain the following terms related to thermocouples:
i) Law of intermediate metals.
ii) Law of intermediate temperature.
10 M
3 (b) Draw and explain the block diagram of DSO.
10 M

4 (a) Draw and explain the following bridges:
i) Maxwell bridge
ii) Schering bridge
10 M
4 (b) What are the types of errors in measurement system? Explain all in detail.
10 M

5 (a) How the Lissajous figure are used for measurement of frequency and phase of the signal using CRO? Explain in detail.
10 M
5 (b) Draw and explain the construction and working of electronic voltmeter using transistors.
10 M

6 (a) Ultrasonic type level transducers.
5 M
6 (b) Displacement measurement using potentiometers.
5 M
6 (c) Data acquisition system.
5 M
6 (d) Specification of CRO.
5 M



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