August V63/T04063/EE/20150816 2015

```August
V63/T04063/EE/20150816
2015
Instructions:
Marks-80
Time: 3 Hrs
1. All questions are compulsory.
2. “Long Answer type Question (LAQ)” is a supply type
60-80 lines in bout 32-40 minutes.
3. “Sort Answer type Question (SAQ)” is a supply type question
of 5 marks which required a typical answer of about 15-20 lines
in bout 08-10 minutes.
4. Figures to the right indicate marks allotted to the questions.
5. Assume suitable data if necessary
6. Use a nonprogrammable type of scientific calculator is
allowed
Marks
SECTION-A
Q.1 A rectangular air filled copper wave guide with dimension 0.9 inch
*0.4 inch cross section and 12&quot;length is operated at 9.2 GHz with a
dominant mode. Find
a) cut-off frequency
b) Guide wavelength and
c) PHASE velocity.
15
OR
Q.1 Define Cut-off frequency .State its importance in waveguide.
15
communication
OR
15
Q.2 Explain Rader Bacons and State its equation, significance
15
Q.3 Define i) Elevation angle. ii) Azimuth angle
5
Q.4 Write a note on microwave components.
5
SECTION-B
Q.5 Illustrate in detail any two applications of optic fiber
communication.
OR
15
Q.5 Calculate the NA of a fiber with core index n1=1.61 and cladding
index n2=1.55
15
Q.6 State and explain Rayleigh scattering.
15
OR
Q.6 Describe attenuation in fiber optic and explain its types.
15
Q.7 What is Refraction? Explain with the help of diagram.
5
Q.8 Wite a note on Ray theory.
5
Computer Generated Random Question Paper dated: 07-07-2015 16:02:17
***BEST OF LUCK***
```