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MU Electronics and Telecom Engineering (Semester 3)
Electronic Instruments and Measurements
May 2013
Electronic Instruments and Measurements
May 2013
Solve any four questions :-
1
(a)
Write a note on thermocouples,explain thermoelectric laws
5 M
1
(b)
Explain the function of time base generator in a CRO
5 M
1
(f)
Explain PCM telemetry system
5 M
1 (c)
State important specifications of spectrum analyzer
5 M
1 (d)
Explain true RMS meter
5 M
1 (e)
What are data loggers
5 M
2
(a)
Compare following temperature transducers with respect to their characteristics, measurement range ,applications RTD,thermocouple and
thermostats
10 M
2
(b)
Give specifications and applications of CRO and DSO
10 M
3
(a)
Explain the elements of a digital FFT analyser with a suitable block diagram.
10 M
3
(b)
Digital frequency counter used for ratio measurement for frequencies such as f1=1MHz and f2=200KHz.Calculate %error in meaurement.Suggest suitable
solution for improving accuracy of measurement by 10 times.
10 M
4
(a)
Draw a typical data acquisition system and explain function of each block
10 M
4
(b)
What is the need of modulation in data transmission ?Explain with waveforms the various digital modulation techniques.
10 M
5
(a)
Explain the principle of operation of dual slope DVM.
10 M
5
(b)
How is the electron beam focused to a fine spot on the face of CRT
10 M
6
(a)
Explain the need of data transmission and telemetry. What are the different modulation methods used in RF telemetry systems?
10 M
6
(b)
Explain universal counter with neat block diagrams .Explain The applications of universal counter
10 M
7
(a)
Significance of 3-1/2 and 4-1/2 digit in DVM
7 M
7
(b)
True RMS meter
7 M
7
(d)
Telemetry
7 M
7 (c)
Strain gauges
7 M
7 (e)
Automation in Digital Instruments.
7 M
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