Electronics and Communication Engineering - Microwave Communication
Exercise :: Microwave Communication - Section 8
| 1. |
Consider the following statements, SWR of a transmission line is infinite when the load is - a short circuit
- a complex impedance
- an open circuit
- a pure reactance
Which of the above statements are correct? |
| A. |
1 and 3 only | | B. |
1, 2, 3 | | C. |
2, 3, 4 | | D. |
1, 2, 4 |
Answer: Option A
Explanation:
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| 2. |
In a reflex klystron the output frequency is determined primarily by resonant frequency of cavity. |
Answer: Option A
Explanation:
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| 3. |
The arrangement in the given figure is a hybid T. If 100 mW fed at port 1, the power reflected back at port 1 is
 |
Answer: Option C
Explanation:
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| 4. |
In TE10 mode the largest electric field in a rectangular wave guide, occurs |
| A. |
along centre line of broad wall (i.e. x = a/2) | | B. |
along the broad wall (i.e. x = 0 and x = a) | | C. |
either (a) or (b) | | D. |
neither (a) nor (b) |
Answer: Option A
Explanation:
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| 5. |
Which modes of circular wave guides have circular symmetry? |
| A. |
TE11 | | B. |
TE11 and TE21 | | C. |
TE01 | | D. |
TE01 and TM01 |
Answer: Option D
Explanation:
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