MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Microwave Engineering Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the normalized load impedance of a transmission line is 2, then the reflection co-efficient is: |
| A. | 0.33334 |
| B. | 1.33334 |
| C. | 0 |
| D. | 1 |
| Answer» B. 1.33334 | |
| 2. |
If the characteristic impedance of a transmission line 50 Ω and reflection coefficient is 0.0126+j0.1996, then load impedance is: |
| A. | 47.3+j19.7Ω |
| B. | 4.7+j1.97Ω |
| C. | 0.26+j0.16 |
| D. | data insufficient |
| Answer» B. 4.7+j1.97Ω | |
| 3. |
If SWR=1.5 with a wavelength of 4 cm and the distance between load and first minima is 1.48cm, then the reflection coefficient is: |
| A. | 0.0126+j0.1996 |
| B. | 0.0128 |
| C. | 0.26+j0.16 |
| D. | none of the mentioned |
| Answer» B. 0.0128 | |
| 4. |
In the expression for phase of the reflection coefficient, Lmin stands for : |
| A. | distance between load and first voltage minimum |
| B. | distance between load and first voltage maximum |
| C. | distance between consecutive minimas |
| D. | distance between a minima and immediate maxima |
| Answer» B. distance between load and first voltage maximum | |
| 5. |
Expression for ϴ means phase angle of the reflection co efficient r=|r|-e^jθ, the phase of the reflection co-efficient is: |
| A. | θ=2π+2βLmin |
| B. | θ=π+2βLmin |
| C. | θ=π/2+2βLmin |
| D. | θ=π+βLmin |
| Answer» C. θ=π/2+2βLmin | |
| 6. |
If the reflection coefficient of a transmission line is 0.4, then the standing wave ratio is: |
| A. | 1.3333 |
| B. | 2.3333 |
| C. | 0.4 |
| D. | 0.6 |
| Answer» C. 0.4 | |
| 7. |
If the standing wave ratio for a transmission line is 1.4, then the reflection coefficient for the line is: |
| A. | 0.16667 |
| B. | 1.6667 |
| C. | 0.01667 |
| D. | 0.96 |
| Answer» B. 1.6667 | |
| 8. |
A slotted line can be used to measure _____ and the distance of _____________ from the load. |
| A. | SWR, first voltage minimum |
| B. | SWR, first voltage maximum |
| C. | characteristic impedance, first voltage minimum |
| D. | characteristic impedance, first voltage maximum |
| Answer» B. SWR, first voltage maximum | |
| 9. |
Slotted line is a transmission line configuration that allows the sampling of: |
| A. | electric field amplitude of a standing wave on a terminated line |
| B. | magnetic field amplitude of a standing wave on a terminated line |
| C. | voltage used for excitation |
| D. | current that is generated by the source |
| Answer» B. magnetic field amplitude of a standing wave on a terminated line | |