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Posted by Er. AMIT DWIVEDI , , , , ,
R.G.P.V. BHOPAL
E.C 6th Semester EXAMINATION
MICROWAVE ENGINEERING EC-604
Time: 3Hrs     Max Marks: 100     Min Marks: 35
Note : Attempt any five questions. All questions carry equal marks
Q.1.(a) Discuss the Microwave frequency bands and its applications?
       (b) Obtain the solutions of wave equations in Rectangular wave guide for TE mode ?

Q.2.(a) An air filled circular waveguide has a radius of 1.5 cm and is to carry energy at frequency of 10 GHz. Find are TE and TM modes for which transmission is possible ?
       (b) Derive the equation for resonant frequency for a rectangular caving resonator.?

Q.3.(a) Explain the properties of E-plane Tee and H plane Tee with a neat sketches ?
       (b) Explain the operation of directional coupler with a neat sketch. ?

Q.4.(a) Obtain the Scattering matrix for H plane Tee ?
       (b) What are microwave ferrites? Explain the working of ferrites Isolator ?

Q.5.(a) Discuss in detail about lead inductance and Inter electrode capacitance effects of conventional tubes at microwave frequencies ?
       (b) What is electronic admittance? Discuss the mode patterns of Reflex klystron oscillator ?

Q.6.(a) Describe how amplification is possible in 8 cavity magnetron with a neat sketches ?
        (b)Write short notes on "Helix traveling wave tube" ?

Q.7.(a) Explain the 'GUNN effect' Mention various modes of GUNN diode ?
        (b)Describe the operating principle of IMPATT diode ?

Q.8.Explain the measurement of 
               (i) Impedance 
               (ii) high VSWR with a neat block diagram of microwave bench set up.?
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