07A70402 Electronic Measurements & Instrumentation B.Tech Question Paper : scce.ac.in
Name of the College : SREE CHAITANYA COLLEGE OF ENGINEERING
University : JNTUH
Department : Electronics And Communication Engineering
Subject Code/Name : 07A70402/TELEVISION ENGINEERING
Year/Sem : IV/I
Website : scce.ac.in
Document Type : Model Question Paper
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/scce.ac.in/4939-07A70402-ELECTRONICMEASUREMENTSANDINSTRUMENTATION.pdf
SCCE Television Engineering Question Paper
Code No: 07A70402
R07 Set No. 2
IV B.Tech I Semester Examinations,December 2011
ELECTRONIC MEASUREMENTS AND INSTRUMENTATION :
Electronics And Communication Engineering
Time: 3 hours
Max Marks: 80
Related : SCCE Information Security B.Tech Question Paper : www.pdfquestion.in/4962.html
Model Questions
Answer any FIVE Questions :
All Questions carry equal marks :
SET – I
1. Draw the block Schematic for wideband sweep generator and explain its Working. [16]
2. Explain the Principle and working of Rotameter. What are the other types of area flow meters available? Critically compare them in all respects. [16]
3. (a) Explain the dierence between an Analog Oscilloscope which can measure upto 100 mHz and Digital Storage Oscilloscope which can measure upto 100 mHz.
(b) Explain the practical advantages of Digital Storage Oscilloscope. [8+8]
4. (a) Explain about dierent types of errors that can occur in measurements.
(b) A Voltmeter having a Sensitivity of 20k /V reads 100V units 150V scale, when connected across an unknown resistor Rx.The current passing through the resistor is 2.0mA .Calculate the % error to loading eect. [8+8]
5. (a) Explain the principle and working of Variable Area Capacitance Transducer.
(b) What are the advantages of capacitance Transducers? What parameters can be measured with Capacitance Transducers? Explain. [8+8]
6. Draw the block Schematic of CRT and explain its working. What are the Possibil- ities and Limitations of improving De ection Sensitivity of CRT? [16]
7. (a) Draw the Maxwell’s Bridge Circuit and derive the expression for the unknown inductance Lx.
(b) In the case of Maxwell’s bridge, one arm has resistance of 1K , in another arm has also only resistance of 5K . The third arm has a resistor 4-7k in shunt with a capacitor of 1F. The bridge is excited at frequency of 1KHz. Determine the Values of an unknown Lx in the fourth arm. [8+8]
8. Draw the block Schematic of Tunable selective type Harmonic Distortion Analyzer and explain its working.What are the advantages and disadvantages of those instruments? [16]
SET – II
Code No: 07A70402
R07 Set No. 2
1. Explain the principle and working of Ultrasonic Flow meters. Compare this with other types of ow measurements. [16]
2. Draw the Schematic of wave meter and explain its principle of operation. [16]
3. (a) Explain the constructional details and dierence between Ohmmeter series type and shunt type.
(b) Explain the front panel of a multimeter. Suppose if we are measuring a voltage 230V AC. What should be the voltage range we select. [8+8]
4. (a) Explain the Principle and working of Thermistors. Describe functional Features.
(b) A thermistor has a temperature coecient of resistance of – 0.05 over a temperature range of 250 to 500C. Determine the resistance of Thermistor at 500C, if R at 250C is 130 . [10+6]
5. (a) Draw the sketch of a CRT and explain its operation in detail.
(b) Determine detection sensitivity of a CRO, given that with usual notation, l =2.5cm, L =20cm, d =2.5 mm, Vd =5V & Va =2000V. [8+8]
6. Which type of Bridge Circuit is used for coils having Q >10? Draw the Circuit and derive the expression for the unknown inductance. [16]
7. (a) Explain the Principle and working of FM Signal Generator.
(b) Give the specifications and Typical values of FM signal Generator. [8+8]
8. Explain the Principle of Frequency and Period measurement when do you prefer Frequency measurement over period measurement. Explain. [16]
SET – III
Answer any FIVE Questions
All Questions carry equal marks
1. Draw the block Schematic for wideband sweep generator and explain its Working. [16]
2. Explain the Principle and working of Rotameter. What are the other types of area ow meters available? Critically compare them in all respects. [16]
3. (a) Explain the dierence between an Analog Oscilloscope which can measure upto 100 mHz and Digital Storage Oscilloscope which can measure upto 100 mHz.
(b) Explain the practical advantages of Digital Storage Oscilloscope. [8+8]
4. (a) Explain about dierent types of errors that can occur in measurements.
(b) A Voltmeter having a Sensitivity of 20k /V reads 100V units 150V scale, when connected across an unknown resistor Rx.The current passing through the resistor is 2.0mA .Calculate the % error to loading eect. [8+8]
5. (a) Explain the principle and working of Variable Area Capacitance Transducer.
(b) What are the advantages of capacitance Transducers? What parameters can be measured with Capacitance Transducers? Explain. [8+8]
6. Draw the block Schematic of CRT and explain its working. What are the Possibil- ities and Limitations of improving De ection Sensitivity of CRT? [16]
7. (a) Draw the Maxwell’s Bridge Circuit and derive the expression for the unknown inductance Lx.
(b) In the case of Maxwell’s bridge, one arm has resistance of 1K , in another arm has also only resistance of 5K . The third arm has a resistor 4-7k in shunt with a capacitor of 1F. The bridge is excited at frequency of 1KHz. Determine the Values of an unknown Lx in the fourth arm. [8+8]
8. Draw the block Schematic of Tunable selective type Harmonic Distortion Analyzer and explain its working.What are the advantages and disadvantages of those instru- ments?