Exam Details
| Subject | transmission lines and waveguides | |
| Paper | ||
| Exam / Course | b.e.(electronics and instrumentation engineering) | |
| Department | ||
| Organization | SETHU INSTITUTE OF TECHNOLOGY | |
| Position | ||
| Exam Date | May, 2017 | |
| City, State | tamil nadu, pulloor |
Question Paper
Reg. No.
B.E. B.Tech. DEGREE EXAMINATION, MAY 2017
Third Semester
Electronics and CommunicationEngineering
01UEC504- TRANSMISSION LINES AND WAVEGUIIDES
(Regulation 2013)
Duration: Threehours Maximum: 100 Marks
Answer ALL Questions.
PART A (10 x 2 20 Marks) 1. List the properties about symmetrical networks. 2. Define decibel. Calculate the P for a gain of -30dbm. 3. State distortion less line and mention the condition for a distortionless line. 4. Define deflection coefficient.
5. What is need for smith chart? 6. Define SWR. 7. Define characteristic impedance. 8. Distinguish between TE and TM waves. 9. Find Q factor of a cubic cavity resonator whose surface resistance is 1x10-2 ohms.
10. Define resonant cavities.
PART B x 16 80 Marks)
11. Explain the characteristics impedance of symmetrical networks.
Explain in detail about constant K filters.
Or
Question Paper Code: 31454
2
31454
Design m-derived LPF, having a fc =5000Hz and a design impedance of 600 Ω. The frequency of infinite attenuation is 1.25 fc..
12. A transmission line is 2 miles long operates at 10KHz and has parameters R=30 Ω /mile, C=80nF/mile, L=2.2mH/mile, and G=20nV/mile. Find the characteristics impedance, propagation constant, attenuation and phase shift per mile.
Or
Discuss about open and short circuit lines.
Explain transmission line with insertion of network and derive the expression insertion loss.
13. Discuss the various parameters of open wire and coaxial line at radio frequency.(8)
Explain about smith chart and its application.
Or
Obtain the input impedance of a Quarter wave line and Half wave line and write about its application.
Illustrate the input impedance of open and short circuited dissipation-less transmission line.
14. Derive the field expression of TM waves guided by a parallel conducting plane.(8)
Discriminate the characteristics of TEM waves.
Or
Derive the expression for E and H fields, if electromagnetic wave propagates in Z-direction between two parallel plates.
15. Derive the field expression of TM wave propagation in rectangular waveguide stating the necessary assumption.
Or
Explain the concept of excitation of waveguides.
Discuss the structure, advantages and disadvantages of resonant cavities.
B.E. B.Tech. DEGREE EXAMINATION, MAY 2017
Third Semester
Electronics and CommunicationEngineering
01UEC504- TRANSMISSION LINES AND WAVEGUIIDES
(Regulation 2013)
Duration: Threehours Maximum: 100 Marks
Answer ALL Questions.
PART A (10 x 2 20 Marks) 1. List the properties about symmetrical networks. 2. Define decibel. Calculate the P for a gain of -30dbm. 3. State distortion less line and mention the condition for a distortionless line. 4. Define deflection coefficient.
5. What is need for smith chart? 6. Define SWR. 7. Define characteristic impedance. 8. Distinguish between TE and TM waves. 9. Find Q factor of a cubic cavity resonator whose surface resistance is 1x10-2 ohms.
10. Define resonant cavities.
PART B x 16 80 Marks)
11. Explain the characteristics impedance of symmetrical networks.
Explain in detail about constant K filters.
Or
Question Paper Code: 31454
2
31454
Design m-derived LPF, having a fc =5000Hz and a design impedance of 600 Ω. The frequency of infinite attenuation is 1.25 fc..
12. A transmission line is 2 miles long operates at 10KHz and has parameters R=30 Ω /mile, C=80nF/mile, L=2.2mH/mile, and G=20nV/mile. Find the characteristics impedance, propagation constant, attenuation and phase shift per mile.
Or
Discuss about open and short circuit lines.
Explain transmission line with insertion of network and derive the expression insertion loss.
13. Discuss the various parameters of open wire and coaxial line at radio frequency.(8)
Explain about smith chart and its application.
Or
Obtain the input impedance of a Quarter wave line and Half wave line and write about its application.
Illustrate the input impedance of open and short circuited dissipation-less transmission line.
14. Derive the field expression of TM waves guided by a parallel conducting plane.(8)
Discriminate the characteristics of TEM waves.
Or
Derive the expression for E and H fields, if electromagnetic wave propagates in Z-direction between two parallel plates.
15. Derive the field expression of TM wave propagation in rectangular waveguide stating the necessary assumption.
Or
Explain the concept of excitation of waveguides.
Discuss the structure, advantages and disadvantages of resonant cavities.
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