MU Electronics and Telecom Engineering (Semester 3)
Electronic Instruments and Measurements
December 2011
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


Attempt any FOUR from the following
1 (a) Explain various sources of errors in measurement system
5 M
1 (b) Piezo electric effect and its application.
5 M
1 (c) Application of Network Analyser.
5 M
1 (d) An 8 bit ADC outputs all 1's when Vi=5.1 volts find its (i) Resolution and (ii) Digital output when Vi=1.28 volts.
5 M
1 (e) Give construction details of lumped parameter delay line.
5 M
1 (f) What are objectives of Data Acquisition System?
5 M

2 (a) Explain phase shift keying with block diagram. State its advantage and disadvantage.
10 M
2 (b) With the help of block diagram explain DC Power supply. Also explain constant voltage mode and constant current mode.
5 M

3 (a) Differentiate Sensors and Transducers, and state five examples of each
5 M
3 (b) Explain frequency selective Analyzer and state applications of wave analyzer
5 M

4 (a) Explain R-2R ladder type digital to analog convertor. State its advantages.
10 M
4 (b) Explain digital storage oscilloscope with suitable block diagram.
10 M

5 (a) Explain one of the type of photoelectric transducer. State its application.
10 M
5 (b) What are different types of telemetry system? And explain any one.
10 M

6 (a) What do you mean by universal counter? Explain and state its advantage.
10 M
6 (b) Find the bandwidth of a CRO if a single having 17 microsecond rise time is displaced with 21 microseconds rise time on tne CRO.
10 M

write shorts notes (any four)
7 (a) Q-meter
5 M
7 (b) Significance of 3-1/2 and 4-1/2 Digit
5 M
7 (c) Automatic test system
5 M
7 (d) Specification of spectrum analyzer.
5 M
7(e ) Automation in digital instruments.
5 M



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