Kurukshetra University 2008 B.Tech Electronics and Communications Engineering B-tech/field and waves - Question Paper
BT-4/J08
Field and Waves
Paper: ET-210
Time: 3 Hours Maximum Marks: 75
Note: Attempt any 5 ques..
1.(a) What is Stokes's theorem ? elaborate its advantages and limitations ? Can Stokes's theorem be applied to closed surfaces ? 7.5
(b) State the divergence theorem. elaborate its limitations and advantages ? 7.5
2.(a) State the Biot-Savart legal regulations. 5x3=15
(b) explain behaviour of dielectrics in electrostatic fields.
(c) State the boundary coditions at the interface ranging from a dielectric and a perfect conductor.
3.(a) State and prove Maxwell's formula in the integral form. 7.5
(b) discuss the difference ranging from plain wave and a uniform plain wave. 7.5
4.(a) discuss the propagation within a parallel plate waveguide. Can the wave ranging from the 2 parallel plates be referred to as a guided wave ? 7
(b) What is TEM wave propagation ? Do parallel-plane transmission line satisfy TEM wave propagation ? 6
(c) describe voltage standing wave ratio. 2
5.(a) What is TM mode of propagation ? How many possible TM modes can occur in a rectangular waveguide ? 6
(b)What is cavity resonator ? How does the resonance occur in this ? How do we describe the quality factor for a cavity resonator ? 9
6.(a) define element of antenna theory. 10
(b) define about antenna coupling. 5
7(a) compute the characteristics impedance of a stripline having constanys:
W=0.14cm, t=0.004cm and b=0.3cm if the relative permeability is 2.3. 15
8. Write short notes on any three: 5x3=15
(a) Poisson's formula
(b) Smith Chart
(c) Microwave antenna
(d) Cylindrical wave guide.
BT-4/J08
Field and Waves
Paper: ET-210
Time: Three Hours Maximum Marks: 75
Note: Attempt any FIVE questions.
1.(a) What is Stokess theorem ? What are its advantages and limitations ? Can Stokess theorem be applied to closed surfaces ? 7.5
(b) State the divergence theorem. What are its limitations and advantages ? 7.5
2.(a) State the Biot-Savart Law. 5x3=15
(b) Discuss behaviour of dielectrics in electrostatic fields.
(c) State the boundary coditions at the interface between a dielectric and a perfect conductor.
3.(a) State and prove Maxwells equation in the integral form. 7.5
(b) Explain the difference between plain wave and a uniform plain wave. 7.5
4.(a) Explain the propagation within a parallel plate waveguide. Can the wave between the two parallel plates be referred to as a guided wave ? 7
(b) What is TEM wave propagation ? Do parallel-plane transmission line satisfy TEM wave propagation ? 6
(c) Define voltage standing wave ratio. 2
5.(a) What is TM mode of propagation ? How many possible TM modes can occur in a rectangular waveguide ? 6
(b)What is cavity resonator ? How does the resonance occur in this ? How do we define the quality factor for a cavity resonator ? 9
6.(a) Describe element of antenna theory. 10
(b) Describe about antenna coupling. 5
7(a) Calculate the characteristics impedance of a stripline having constanys:
W=0.14cm, t=0.004cm and b=0.3cm if the relative permeability is 2.3. 15
8. Write short notes on any three: 5x3=15
(a) Poissons equation
(b) Smith Chart
(c) Microwave antenna
(d) Cylindrical wave guide.
.
| Earning: Approval pending. |
