Electronics and Communication Engineering - Microwave Communication
Exercise :: Microwave Communication - Section 8
| 26. |
Consider the following statements about hybrid ring - Ports 1 and 2 are decoupled.
- Port 3 and 4 are coupled.
- A signal entering either port 1 or 2 splits equally between ports 3 and 4.
- A signal entering either port 3 or 4 splits equally between ports 1 and 2.
Which of the above are correct? |
| A. |
1, 2, 3 and 4 | | B. |
1, 3 and 4 | | C. |
1 and 2 | | D. |
2, 3 and 4 |
Answer: Option B
Explanation:
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| 27. |
TM01 mode in circular waveguide is analogous to |
| A. |
TM10 mode in square waveguide | | B. |
TM11 mode in square waveguide | | C. |
TM20 mode in square waveguide | | D. |
TM02 mode in square waveguide |
Answer: Option B
Explanation:
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| 28. |
In microwave system, waveguide twists |
| A. |
change the plane of polarization of a propagating wave | | B. |
change the direction of a propagating wave | | C. |
change the mode of a propagating wave | | D. |
both (b) and (c) |
Answer: Option A
Explanation:
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| 29. |
Guide wavelength (λg), cutoff wavelength (λc) and free space wavelength (λ0) of a waveguide are related as |
Answer: Option A
Explanation:
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| 30. |
A 'rat race' is a |
| A. |
hybrid junction for microwaves | | B. |
a microwave oscillator | | C. |
a microwave amplifier | | D. |
a microwave antenna |
Answer: Option A
Explanation:
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