Seat No.: ________ Enrolment No.

___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER–IV (NEW) EXAMINATION – SUMMER 2022
Subject Code:3141709 Date:02-07-2022
Subject Name:Principle of Measurement Science
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.
4. Simple and non-programmable scientific calculators are allowed.
MARKS
Q.1 (a) Define metal combination of J,K,R,S and T thermocouple. Comment 03
on thermocouple based on linearity, stability and active or passive type
with reason.
(b) Draw and describe functional block diagram of measurement system. 04
(c) Write a short note on air purge/bubbler type liquid level measurement 07
with construction, working and diagram.

Q.2 (a) Define SI units for temperature, pressure and level measurement. 03
(b) Explain difference between variable head and area type flow meter. 04
(c) Explain McLeod gauge for vacuum measurement with neat diagram. 07
OR
(c) Define the vacuum pressure. Explain pirani vacuum gauge with all 07
details

Q.3 (a) Why industries use only 4-20 MA and 3 to 15 PSI as a standard range 03
of signal.
(b) Explain resistive transducer in detail with necessary diagram. 04
(c) Discuss the principle and construction of orifice plate flow meter. 07
OR
Q.3 (a) Explain vena contracta and stagnation point in detail. 03
(b) Explain dead weight tester in detail with necessary diagram and 04
limitation.
(c) Explain pressure switch and its application in real world. 07

Q.4 (a) With neat diagram, explain the working of 2-wire, 3-wire and 4-Wire 03
RTD with advantages and disadvantage.
(b) Explain bourdon tube in detail. 04
(c) Explain LVDT with necessary diagram, advantages and 07
disadvantages. Discuss limitation of LVDT.
OR
Q.4 (a) Explain law of intermediate metal law with its real application. 03
(b) Explain bimetallic transducer for temperature measurement. Give one 04
example of application of bimetallic in real word.
(c) Explain electromagnetic flow meter in detail with its application in 07
industries.

Q.5 (a) Explain solid level measurement. 03

(b) Explain doppler effect based flow measurement. 04
(c) Discuses criteria for selection of flow meter and design. 07
OR

1
Q.5 (a) Explain flapper-nozzel system. 03
(b) Explain measurement of liquid level using float type. 04
(c) Explain mass flow meter in detail. 07

*************

2
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER–IV(NEW) EXAMINATION – WINTER 2022
Subject Code:3141709 Date:16-12-2022
Subject Name:Principle of Measurement Science
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.
4. Simple and non-programmable scientific calculators are allowed.
MARKS
Q.1 (a) Define temperature. Convert 102°F into °K and °C. 03
(b) Define transducer and classify them in detail. 04
(c) Define following terms of performance characteristic of the instrument 07
briefly
1. Fidelity
2. Dead Zone
3. Accuracy
4. Speed of response
5. Precision
6. Threshold
7. Repeatability

Q.2 (a) Define 03

1.Vacuum
2. Atmospheric pressure
3. Gauge pressure
(b) Write short note on selection criteria for transducer. 04
(c) Explain linear variable differential transformer with neat sketch along 07
with its advantages and disadvantages.
OR
(c) Explain McLeod Gauge in detail with a neat sketch along with its 07
advantages and disadvantages.

Q.3 (a) Explain capacitive level measurement in brief with diagram. 03

(b) Draw and describe Ultrasonic Level sensor. 04
(c) Explain ultrasonic level measurement system in detail with a neat 07
sketch.
OR
Q.3 (a) Classify different types of direct and indirect level measurement 03
techniques.
(b) Define Reynolds number. What is its role in flow calculations? How are 04
laminar and turbulent flows distinguished by the Reynolds number?
(c) Explain Air Purge type liquid level measurement in detail with neat 07
sketch.

Q.4 (a) Explain principle of electromagnetic flow meter. 03

(b) Give advantages and disadvantages of Thermocouple, RTD. 04

(c) Draw and describe construction, working and limitation of 2-wire RTD 07
based temperature measurement. How its limitation will overcome?

OR
1
 Q.4 (a) Explain different type of orifice plate for flow measurement. 03
(b) Explain positive temperature coefficient and negative temperature 04
coefficient with respect to different temperature sensor.
(c) Explain optical pyrometer in detail with neat sketch. 07

Q.5 (a) Define pressure and write different units of pressure. 03

(b) Explain U tube manometer with neat sketch along with its merits and 04
demerits.
(c) Explain Doppler and Transit time Ultrasonic meter for flow measurement 07
in detail with neat sketch.
OR
Q.5 (a) Explain in brief pirani gauge for vacuum measurement. 03
(b) Explain pressure measurement using flapper nozzle assembly. 04
(c) Explain ultrasonic flow meters in detail with a neat sketch. 07

*************

2
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER–IV (NEW) EXAMINATION – SUMMER 2021
Subject Code:3141709 Date:07/09/2021
Subject Name:Principle of Measurement Science
Time:02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Simple and non-programmable scientific calculators are allowed.
MARKS
Q.1 (a) Define following terms 03
1 ) Accuracy 2) Drift 3) fidelity
(b) Draw and describe Pneumatic Amplifier 04
(c) How will you select best transducer to fulfill your measurement requirement? 07
Describe it with proper technical arguments.

Q.2 (a) Define 1) Absolute Pressure 2) Gauge Pressure 3) Total Pressure 03

(b) How DP Cell works for Flow measurement? Describe with neat sketch. 04
(c) Draw and describe construction, working and benefit with neat sketch of 07
Pirani gauge for low pressure measurement.
OR
(c) Describe the principle of level measurement using ultrasonic sensor. 07
Q.3 (a) Convert 2098 ºFahrenheit to equivalent ºKelvin, ºCelsius ºRankin and 03
Reaumur values.
(b) What is RTD? Describe it briefly 04
(c) Define temperature sensitivity of K-Type thermocouple. Draw and describe 07
working, operation and limitation of thermocouple based temperature
measurement.
OR
Q.3 (a) Obtain Bernoulli equation for incompressible fluid 03
(b) Explain Orifice flow meter. 04
(c) Describe Pitot-Tube with its construction, working, installation and 07
limitation
Q.4 (a) Draw and describe Level Switch 03
(b) Explain in detail thermoelectric Laws for thermocouple. 04
(c) Draw Flapper-Nozzle assembly. Explain how it will work as pneumatic 07
amplifier?
OR
Q.4 (a) Discuss with neat Sketch about Dead Weight Tester. 03
(b) Explain doppler and transit time ultrasonic meter for flow measurement. 04
(c) Explain with a neat figure, principle, construction and working of Optical 07
pyrometer
Q.5 (a) Identify any 2 flow measurement technique using time as its measurement 03
principle. With a neat figure, state principle of any one technique
(b) Discuss the basic principle of manometer. Explain different types of 04
manometers in detail
(c) With a neat figure, explain construction and working of turbine flowmeter 07
OR
Q.5 (a) Explain the Vena Contracta & Stagnation Point. 03
(b) What is the difference between orifice transducer and venturi transducer? 04
(c) Explain air purge level measurement with neat sketch 07
*************
1
 Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER–IV (NEW) EXAMINATION – WINTER 2021
Subject Code:3141709 Date:24/12/2021
Subject Name:Principle of Measurement Science
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.
4. Simple and non-programmable scientific calculators are allowed.

Q.1 (a) Define Speed of Response, Lag errors, Fidelity. 03

(b) Define Accuracy, Precision, Sensitivity and Resolution. 04
(c) List classification of transducer. List selection criteria of transducer. 07
Q.2 (a) List measurement units of level. 03
(b) Explain liquid level measurement using float sensor. 04
(c) Explain liquid level measurement using ultrasonic transducer. 07
OR
(c) Explain calibration of liquid level transmitter in detail with respect to example. 07
Q.3 (a) List measurement units of pressure. 03
(b) Explain bourdon tube in detail. 04
(c) Explain Mcleod gauge in details. 07
OR
Q.3 (a) Explain manometers in detail. 03
(b) Explain diaphragms in detail. 04
(c) Explain dead weight tester in detail. 07
Q.4 (a) List measurement units of flow. 03
(b) Explain rotameter for flow measurement. 04
(c) Explain vortex flow meter in detail. 07
OR
Q.4 (a) List types of flow measurement. 03
(b) Explain mass flow meter. 04
(c) Explain turbine flow meter. 07
Q.5 (a) What is difference between PT-100 and PT-1000 RTD? 03
(b) List units of temperature measurement. Convert temperature in Celsius to other 04
unit with help of example.
(c) Explain RTD in detail. 07
OR
Q.5 (a) Explain thermocouple laws. 03
(b) Why cold junction compensation in thermocouple is required? Explain. 04
(c) Explain thermistor in detail. 07

*************

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER– IV EXAMINATION – SUMMER 2020
Subject Code: 3141709 Date:28/10/2020
Subject Name: Principle of Measurement Science
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 sensor, temperature and precision. 03
(b) Draw and describe functional block diagram of measurement 04
system.

(c) Explain with a neat figure, principle, construction, working, 07

advantages and disadvantages of 2-wire,3-wire and 4-wire
RTD.

Q.2 (a) Define transducer and classify them in detail. 03

(b) Explain with a neat figure, principle, construction and working 04
of Bimetallic thermometer.
(c) Write a short note on Air Purge/Bubbler type liquid level 07
measurement with construction, working and diagram.
OR
(c) Describe the principle of level measurement using capacitance 07
and show using equations how capacitance changes with level
change.
Q.3 (a) What is the significance of dead weight of tester? Explain it 03
with schematic diagram.
(b) Explain principle for ultrasonic level measurement. 04
(c) Explain McLeod gauge for vacuum measurement with neat 07
diagram.
OR
Q.3 (a) Define the vacuum pressure. Explain pirani vacuum gauge with 03
all details.
(b) Explain rotameter type flow meter with neat sketch. 04
(c) Discuss the principle and construction of orifice plate 07
flowmeter.
Q.4 (a) Discuss the basic principle of manometer. 03
(b) Explain in detail thermoelectric Laws for thermocouple. 04
(c) Explain with a neat the working of a flow meter used for 07
measuring unsteady flow of gases.
OR
Q.4 (a) List out different displacer type level detectors. Explain torque 03
tube type displacer level detector.
(b) Explain doppler and transit time ultrasonic meter for flow 04
measurement.
(c) Explain stagnation point and working principle of pitot tube. 07

Q.5 (a) List out positive and negative metal combination for 03
J,K,R,S,T thermocouple.
(b) Explain working of pressure switch in detail 04

1
 (c) Explain the electromagnetic flow meter with its basic principle 07
of operation.
OR
Q.5 (a) Explain flapper-nozzle assembly in detail. 03
(b) Explain level switch. 04
(c) Explain radiation pyrometer with diagram. 07

*************

2
 Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE- SEMESTER–IV (NEW) EXAMINATION – WINTER 2020
Subject Code:3141709 Date:17/02/2021
Subject Name:Principle of Measurement Science
Time:02:30 PM TO 04:30 PM Total Marks:56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Define any three following terms of performance characteristic of the instrument 03
briefly 1. Resolution 2. Threshold 3. Repeatability 4. Drift 5. Speed of response 6.
Fidelity.
(b) Define transducer and classify them in detail. 04
(c) Explain with a neat figure, principle, construction, working, advantages and 07
disadvantages of RTD.
Q.2 (a) Explain different types of pressures with units. 03
(b) Draw and describe each block of functional block diagram for secondary 04
measurement system.
(c) Explain the need of temperature measurement in process and allied industries. Write 07
different temperature scales with minimum and maximum range also give conversion
formula for °K to R',°C,°F.

Q.3 (a) Draw Flapper-Nozzle assembly, Explain how it will work as pneumatic amplifier? 03
(b) Explain air purge system for level measurement. 04
(c) Explain the laws of thermocouple with necessary diagram and equations. 07

Q.4 (a) Obtain Bernoulli equation for incompressible fluid. 03

(b) Explain pitot tube flow meter. 04
(c) Explain turbine flow meter with necessary diagram. 07

Q.5 (a) Explain doppler effect with necessary equations and diagram. 03
(b) Explain capacitance based level measurement. 04
(c) Draw and describe level switch. 07

Q.6 (a) Explain thermal conductivity gauge for pressure measurement. 03

(b) Explain radiation pyrometer in detail. 04
(c) Describe with necessary diagram vortex type flow meter. List its benefits and 07
disadvantages.

Q.7 (a) Explain rota meter for flow measurement with its limitation. 03
(b) Importance of cold junction compensation & its circuits. 04
(c) How will Electro-Magnetic principle useful for velocity of fluid flow measurement? 07
Draw and describe with benefits and limitation of EM Flowmeter.

Q.8 (a) Discuss Bellows type pressure sensor and its application for the measurement of 03
absolute and gauge pressure.
(b) Describe displace type level measurement. 04
(c) What are thermistors? How are they constructed? Draw and discuss their resistance- 07
temperature characteristic.