Discussion
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- Question
In the given figure power meters at A and B indicate 1 mW and 110 ?W respectively. VSWR of line is
Options- A. 1.5
- B. 2
- C. 2.5
- D. 3
- Correct Answer
- 2
- 1. In microstrip line has dielectric material most commonly used is
Options- A. silicon
- B. rubber
- C. plastic
- D. bakelite Discuss
- 2. The manufacturing technique used to manufacture strip type transmission line is
Options- A. photoetching technique
- B. oxidation technique
- C. cladding
- D. epitaxial Discuss
- 3. Performance of a PIN diode switch is represented by
Options- A. insertion loss when switch is off
- B. insertion loss when switch is on
- C. insertion loss when switch is on and isolation loss when switch is off
- D. insertion loss when switch is off and isolation loss when switch is on Discuss
- 4. Microwaves
Options- A. get reflected by ionosphere
- B. are absorbed by ionosphere
- C. are neither reflected nor absorbed by ionosphere
- D. are both reflected and absorbed by ionosphere Discuss
- 5. In a TWT the phase velocity of the axial component of the field on the slow wave structure is kept
Options- A. equal to velocity of electron
- B. slightly less than velocity of electron
- C. slightly more than velocity of electron
- D. equal to velocity of light in free space Discuss
- 6. The earliest uses of electromagnetic waves were
Options- A. point to point communication
- B. radar
- C. both (a) and (b)
- D. neither (a) nor (b) Discuss
- 7. An electromagnetic wave can be completely guided by a dielectric rod or slab.
Options- A. True
- B. False Discuss
- 8. In fibre optics the use is made of thin glass fibres for efficient transmission of light.
Options- A. True
- B. False Discuss
- 9. Klystron amplifier is not used to amplifier very weak microwave signals due to
Options- A. low gain for weak signals
- B. low noise for weak signals
- C. high noise
- D. both (a) and (b) Discuss
- 10. Which of the following modes in circular waveguides are circularly symmetric?
Options- A. TE01
- B. TE02
- C. both (a) and (b)
- D. neither (a) nor (b) Discuss
Microwave Communication problems
Search Results
Correct Answer: silicon
Correct Answer: photoetching technique
Correct Answer: insertion loss when switch is on and isolation loss when switch is off
Correct Answer: are neither reflected nor absorbed by ionosphere
Correct Answer: equal to velocity of electron
Correct Answer: both (a) and (b)
Correct Answer: True
Correct Answer: True
Correct Answer: high noise
Correct Answer: both (a) and (b)
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