Download AKTU B-Tech 5th Sem 2016-2017 Design Of Concrete Structure I Nce 505 Question Paper

Code: 13A05305

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

B. Tech II Year I Semester Examinations, November/December - 2016

ELECTROMAGNETIC THEORY AND TRANSMISSION LINES

(Electronics and Communication Engineering)

Time: 3 Hours Max. Marks: 75

Note: This question paper contains two parts A and B.

Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks.

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PART - A (25 Marks)

1. 1. State Coulomb’s Law. (2 Marks)
   2. Define Electric Potential. (3 Marks)
   3. State Ampere’s Circuital Law. (2 Marks)
   4. Define Magnetic Dipole Moment. (3 Marks)
   5. Define Displacement Current. (2 Marks)

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   6. State Faraday’s Law of Electromagnetic Induction. (3 Marks)
   7. Define Intrinsic Impedance. (2 Marks)
   8. Define Standing Wave Ratio. (3 Marks)
   9. What are the applications of Smith chart? (2 Marks)
   10. Write short notes on Quarter wave transformer. (3 Marks)

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PART - B (50 Marks)

2. Derive an expression for the electric field due to a uniformly charged straight filament of length ‘L’ meters and with a charge density of +? C/m.

   OR

   Determine the electric field intensity at P(0,0,h) due to a circular ring ? = a, z = 0, if the ring carries a uniform charge density ?_L C/m.

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3. Derive the expression for Magnetic field intensity due to infinite long straight filament carrying current ‘I’ amps.

   OR

   Derive Maxwell’s fourth equation, using Ampere’s circuital law in differential and integral form.

4. State Maxwell’s Equations in both point and integral form for time varying fields.

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   OR

   Define Poynting vector and derive Poynting theorem.

5. Derive the transmission line equations.

   OR

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   A lossless transmission line with Z₀ = 50 ? is 30 m long and operates at 2 MHz. The line is terminated with a load Z_L = (60 + j40) ?. If v = 0.6c on the line, find a, ß, ?, the reflection coefficient G, the standing wave ratio S and the input impedance Z_in.

6. Explain single stub matching with neat diagrams.

   OR

   Explain the construction and principle of operation of smith chart in detail.

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