August
V63/T04062/EE/20150813
2015
Electronics Instruments and Measurement
Instructions:
Marks-80
Time: 3 Hrs
1. All questions are compulsory.
2. “Long Answer type Question (LAQ)” is a supply type
question of 15 marks which required a typical answer of about
60-80 lines in bout 32-40 minutes.
3. “Sort Answer type Question (SAQ)” is a supply type question
of 5 marks which required a typical answer of about 15-20 lines
in bout 08-10 minutes.
4. Figures to the right indicate marks allotted to the questions.
5. Assume suitable data if necessary
6. Use a nonprogrammable type of scientific calculator is
allowed
Marks
SECTION-A
Q.1 Draw & explain the construction & working of PMMC instrument.
Derive the equation for deflection if the instrument is spring
controlled.
OR
Q.1 Write Classification of Instruments as Absolute and Secondary
Instrument (five points). Draw & Explain loaded effect of
instruments with suitable example.
15
Q.2 Draw & explain multi range AC voltmeter. Define & explain the
term related to digital instrument such as 1) Peak-to-Peak
Reading 2 )Peak Responding 3) Average Responding
15
15
OR
Q.2 Draw & explain the Average responding voltmeter. Explain
calibration method for digital instruments.
15
Q.3 What is Unit.? Explain fundamentals & derived units.
5
Q.4 Differentiate between the terms “Scale range” and “Scale
Span”.(any five)
5
SECTION-B
Q.5 Draw the basic block diagram of an oscilloscope & explain the
functions of each block.
15
OR
Q.5 Explain the different types of reticules used in a CRO. Describe
their any three advantages & disadvantages.
15
Q.6 What is Q meter? What is the different method of obtaining color
bar patterns? Explain it in details.
15
OR
Q.6 What are signal sources? What are the desirable characteristics of a
signal? Give an overview of different signal sources used.
15
Q.7 Write the procedure for frequency & phase of signal is
measurement by CRO?
5
Q.8 Draw & explain the block diagram of a modern laboratory type
generator.
5
Computer Generated Random Question Paper dated: 07-07-2015 15:47:15
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