Maharashtra State Board of Technical Education 2008 Diploma Industrial Electronics Industrial Measurements - Question Paper

Sample ques. Paper – I
Course Name :- Electronics group
Course code :- ET/EJ/EX/EN/DE/IE/IS/IC/IU/ED/EI
Semester :- Third
Subject :- Industrial Measurements
Duration :- three hours Marks: 80


Instructions:

1. All ques. are compulsory
2. Illustrate your answers with neat sketches wherever necessary
3. Figures to the right indicate full marks
4. presume suitable data if necessary
5. Preferably, write the answers in sequential order


Q. No. one Attempt Any 8 of the Following: [Marks:(2 X eight = 16)]

a. List any four-selection criteria of the transducer for any application.

b. Identify active & passive transducers from the subsequent
1. Thermocouple 2. Piezo-electric 3. RTD 4. LVDT

c. describe the subsequent
1. Atmospheric pressure 2. vacuum pressure

d. List 2 advantages and disadvantages of bellows.

e. State cause why Rota meter is called as variable area flow meter.

f. State 2 advantages and disadvantages of radar kind level measurement.

g. State 1 application of every of the subsequent
1. float kind level gauge 2. Ultrasonic level detector

h. State seeback effect.

i. What is meant by PTC & NTC? provide example of every.

j. List any 2 materials used for bourdon tube. Also list 2 kinds of bourdon tube.


Q. No. two Attempt Any 3 of the Following: [Marks:(4 X three = 12)]

a. define working principle of ultrasonic method of level measurement.

b. define working principle of bimetallic thermometer with neat diagram.

c. define how DC tachogenerator is used for measurement of speed. discuss with the help of diagram.

d. define differential pressure measurement using inclined tube manometer.


Q. No. three Attempt Any 3 of the Following: [Marks:(4 X three = 12)]

a. What is piezoelectric effect? discuss working of piezo electric transducer.

b. Compare ultrasonic and radar level detector with reference to working principle and construction.

c. define how bourdon tube is used for measurement of pressure along with secondary transducer.

d. Differentiate ranging from venturi tube and orifice plate with respect to their construction.


Q. No. four Attempt Any 2 of the Following: [Marks:(8 X two = 16)]

a. Compare the use of venturi tube and orifice plate as primary element of flowmeter.

b. define various kinds of flow based on Reynolds’s number, state unit for volumetric and mass flow.

c. elaborate various kinds of pyrometer? define construction of infrared pyrometer ? provide 2 advantages and 2 disadvantages also mention its applications.


Q. No. five Attempt Any 3 of the Following: [Marks:(4 X three = 12)]

a. discuss with the help of neat sketch float kind method for level measurement.

b. Compare type-J and type-T thermocouple on the basis of
i) Metal used ii) Sensitivity iii) Accuracy iv) Temperature range

c. List various methods used for humidity and moisture measurement.

d. provide 1 application of every
i) Venture ii) Electromagnetic flow meter iii) Orifice iv) Variable area flow meter


Q. No. six Attempt Any 3 of the Following: [Marks:(4 X three = 12)]

a. Mention a variable that can be measured using Piezo electric transducer. provide principle of its operation. Name any 2 materials, which exhibit it.

b. Compare ranging from AC and DC Tachogenerater (any four points)

c. List various temperature scales. State expression of conversion of these scales.

d. discuss with the help of a neat sketch construction of vortex fluidic flow meter.

Earning:   Approval pending.