Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 4th Sem New 2141003 Electronics Measurement And Instrumentation Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2141003 Date: 12/12/2019
Subject Name: Electronics Measurement and Instrumentation
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Define: (1) Accuracy
(2) Precision
(3) Resolution
03
(b) Explain: (1) Gross errors
(2) Random errors.
(2)
04
(c) Describe the classification of standards in detail
07
Q.2 (a) Explain the applications and limitations of Wheatstone bridge. 03
(b) Draw the circuit diagram of Kelvin bridge and derive the equation
for unknown resistance.
04
(c) Draw the circuit diagram of Maxwell?s bridge and derive the
equation for unknown Inductance and resistance. What are its
advantages and disadvantages?
07
OR
(c) Draw the circuit diagram of Hay?s bridge and derive the equation
for unknown Inductance and resistance. What are its advantages
and disadvantages?
07
Q.3 (a) Draw the circuit diagram of de-sauty?s bridge and derive the
equation for unknown Capatance.
03
(b) Draw the circuit diagram of Schering?s bridge and derive the
equation for unknown Capatance and resistance.
04
(c) An unbalanced Wheatstone bridge has following details:
R1= 1K,R2=2.5K,R3=3.5K,R4=10K,RG=300?, battery E=6V.
Calculate the current through the Galvanometer.
07
OR
Q.3 (a) A Maxwell bridge is used to measure inductive impedance. The
bridge constants are:
C1=0.01?F,R1=470 k?,R2=5.1 k?, R3=100 k?
Find the series equivalent of the unknown impedance.
03
(b) Draw the diagram of digital frequency meter and explain its
working.
04
(c) Find the series equivalent inductance and resistance of hay?s bridge
to null with the following bridge arms( clockwise ABCD):
Arm AB: R1=2 k?,C1=1 ?F,
Arm BC: R3=1 k?,
Arm CD: unknown Rx and Lx
Arm DA: R2=10 k?
?= 3000 rad/s
07
Q.4 (a) Draw the block diagram of a pulse generator.
(only diagram, no description)
03
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2141003 Date: 12/12/2019
Subject Name: Electronics Measurement and Instrumentation
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Define: (1) Accuracy
(2) Precision
(3) Resolution
03
(b) Explain: (1) Gross errors
(2) Random errors.
(2)
04
(c) Describe the classification of standards in detail
07
Q.2 (a) Explain the applications and limitations of Wheatstone bridge. 03
(b) Draw the circuit diagram of Kelvin bridge and derive the equation
for unknown resistance.
04
(c) Draw the circuit diagram of Maxwell?s bridge and derive the
equation for unknown Inductance and resistance. What are its
advantages and disadvantages?
07
OR
(c) Draw the circuit diagram of Hay?s bridge and derive the equation
for unknown Inductance and resistance. What are its advantages
and disadvantages?
07
Q.3 (a) Draw the circuit diagram of de-sauty?s bridge and derive the
equation for unknown Capatance.
03
(b) Draw the circuit diagram of Schering?s bridge and derive the
equation for unknown Capatance and resistance.
04
(c) An unbalanced Wheatstone bridge has following details:
R1= 1K,R2=2.5K,R3=3.5K,R4=10K,RG=300?, battery E=6V.
Calculate the current through the Galvanometer.
07
OR
Q.3 (a) A Maxwell bridge is used to measure inductive impedance. The
bridge constants are:
C1=0.01?F,R1=470 k?,R2=5.1 k?, R3=100 k?
Find the series equivalent of the unknown impedance.
03
(b) Draw the diagram of digital frequency meter and explain its
working.
04
(c) Find the series equivalent inductance and resistance of hay?s bridge
to null with the following bridge arms( clockwise ABCD):
Arm AB: R1=2 k?,C1=1 ?F,
Arm BC: R3=1 k?,
Arm CD: unknown Rx and Lx
Arm DA: R2=10 k?
?= 3000 rad/s
07
Q.4 (a) Draw the block diagram of a pulse generator.
(only diagram, no description)
03
2
(b) Draw the block diagram of standard signal generator and explain
its operation.
04
(c) Draw the circuit diagram of Wien?s bridge and derive the equation
for unknown frequency.
07
OR
Q.4 (a) Draw the block diagram of sweep generator.
(only diagram, no description).
03
(b) Draw the block diagram of AF sine and square wave generator and
explain its working briefly.
04
(c) Draw the block diagram of true rms reading volt meter and explain
its working in detail. What are its advantages and disadvantages?
07
Q.5 (a) Draw the circuit diagram of basic wave analyzer and explain its
working briefly.
03
(b) Draw the block diagram of function generator and explain its
operation.
04
(c) Draw the block diagram of basic CRO and explain the function of
each block.
07
OR
Q.5 (a) Draw the basic construction of linear variable differential
transducer(LVDT) and explain its working briefly.
03
(b) With diagram explain the working principle of spectrum analyzer. 04
(c) Draw the block diagram of digital storage oscilloscope and explain
its principle of operation in detail.
07
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This post was last modified on 20 February 2020