STUPIDSID
1 (a)
Differentiate between waveguide and transmission line.
5 M
1 (b)
Explain amplification process in TWT.
5 M
1 (c)
Compare klystron with magnetron.
5 M
1 (d)
State and explain Lorentz Reciprocity theorem.
5 M
2 (a)
Describe the mechanism of velocity modulation in a two cavity klystron and hence obtain an expression for the bunched beam current. Also find out condition for maximum power output.
10 M
2(b)
Describe operation of O-type and M-type device in brief. Explain in brief Gyrotrons.
10 M
3 (a)
Explain the working of Magic Tee. Design a circulator using Magic Tees.
10 M
3 (b)
Explain the procedure of measurement of dielectric constant at microwave frequency.
10 M
4 (a)
Describe construction and working of two hole directional coupler along with its S-matrix.
10 M
4 (b)
Explain the working of a negative resistance parametric amplifier.
10 M
5 (a)
Explain single stub matching. What are its advantages and disadvantages?
10 M
5 (b)
Calculate the position and length of short circuited stub design to match 200 +j300 load to a transmission line whose characteristics impedance is 300 Ω (use Smith chart).
10 M
6 (a)
Describe different modes of oscillation of Gunn diode.
10 M
6 (b)
Explain the working of (i) Coupled line filters (ii) Filters using coupled resonators.
10 M
Write short notes on:
7 (a)
Measurement of impedance .
5 M
7 (b)
Hybrid junctions.
5 M
7 (c)
Show that TM01 and TM10 modes in a rectangular do not exist.
5 M
7 (d)
Microwave propagation in ferrites.
5 M
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