Microwave Theory and Techniques 2018 Question Paper — Government Coll…
The 2018 Microwave Theory and Techniques previous year question paper (Government College of Engineering and Technology, Jammu), with every question and its marks.
- University: Government College of Engineering and Technology, Jammu
- Subject: Microwave Theory and Techniques
- Course: Microwave Engg.
- Branch: ELEC. & COMM. ENGG
- Year: 2018
- Paper: end-term
- Duration: 180 minutes
- Total marks: 100
Instructions
- Attempt five questions in all, selecting atleast two questions from each section.
- All questions carry equal marks.
Questions
SECTION-A
- Q1. (a) Determine the TE mode field equations in the circular waveguide. (10) (b) A rectangular waveguide has a=4cm; b=3 cm as its sectional dimensions. Find all the modes which will propagate at 5000 MHz. (10) [20 marks]
- Q2. (a) Write a short note on excitation of modes in rectangular waveguides. (10) (b) Write short note on ferrite phase shifters. (10) [20 marks]
- Q3. Explain the working principle and operation of two cavity klystron amplifier. Also derive the expressions for its output power. (20) [20 marks]
- Q4. (a) With the help of diagram, explain the working of multi cavity magnetron. (10) (b) Explain the principle and operation of backward wave oscillator. (10) [20 marks]
SECTION-B
- Q5. (a) What are avalanche transit time devices? Explain the operation, construction and applications of IMPATT diode. (10) (b) Describe the construction of a PIN diode and also its characteristics. (10) [20 marks]
- Q6. (a) Explain the operation of microwave receiver with the help of relevant diagram. (10) (b) Explain the measurement of high VSWR with the help of block diagram. (10) [20 marks]
- Q7. (a) Discuss in detail various methods employed for frequency measurement in microwave system. (10) (b) Discuss in detail the power measurement using the microwave devices. (10) [20 marks]
- Q8. Write a short note on any two a) Tunnel diode b) Losses in microstrip lines c) Microstrip lines (2×10=20) [20 marks]