MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Electromagnetic Theory knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The standing wave ratio for the maximum power transfer in a transmission line is |
| A. | 1:2 |
| B. | 2:1 |
| C. | -1:1 |
| D. | 1:1 |
| Answer» E. | |
| 2. |
The standing waves for open circuit current and short circuit voltage are the same. State true/false. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 3. |
The standing waves for open circuit voltage and short circuit current are the same. State true/false. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Find the transmission coefficient of a 75 ohm line with load impedance of 40 ohm. |
| A. | 0.69 |
| B. | 0.96 |
| C. | 0.31 |
| D. | 0.13 |
| Answer» B. 0.96 | |
| 5. |
For maximum power transfer theorem to be applied to the transmission line, the reflection coefficient has to be |
| A. | 1 |
| B. | -1 |
| C. | 0 |
| D. | ∞ |
| Answer» D. ∞ | |
| 6. |
FIND_THE_TRANSMISSION_COEFFICIENT_OF_A_75_OHM_LINE_WITH_LOAD_IMPEDANCE_OF_40_OHM.?$ |
| A. | 0.69 |
| B. | 0.96 |
| C. | 0.31 |
| D. | 0.13 |
| Answer» B. 0.96 | |
| 7. |
The standing waves for open circuit current and short circuit voltage are the same. State true/false.$ |
| A. | true |
| B. | false |
| Answer» B. false | |
| 8. |
The_standing_waves_for_open_circuit_voltage_and_short_circuit_current_are_the_same._State_true/false.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
The_standing_wave_ratio_for_the_maximum_power_transfer_in_a_transmission_line_is |
| A. | 1:2 |
| B. | 2:1 |
| C. | -1:1 |
| D. | 1:1 |
| Answer» E. | |
| 10. |
For maximum power transfer theorem to be applied to the transmission line, the reflection coefficient has to b? |
| A. | 1 |
| B. | -1 |
| C. | 0 |
| D. | ‚àû |
| Answer» D. ‚Äö√Ñ√∂‚àö‚Ć‚àö¬™ | |
| 11. |
The short circuit impedance is given by 18 ohm and the characteristic impedance is 50 ohm. Find the open circuit impedance. |
| A. | 138.8 |
| B. | 188.3 |
| C. | 388.1 |
| D. | 838.1 |
| Answer» B. 188.3 | |
| 12. |
The characteristic impedance of a line having open and short impedances of 20 and 5 respectively is |
| A. | 20 |
| B. | 100 |
| C. | 25 |
| D. | 10 |
| Answer» E. | |
| 13. |
The standing wave ratio in short and open circuit transmission lines will be |
| A. | 0 |
| B. | -1 |
| C. | 1 |
| D. | ‚àû |
| Answer» E. | |
| 14. |
The open circuit line will have a reflection coefficient of |
| A. | 0 |
| B. | 1 |
| C. | -1 |
| D. | ‚àû |
| Answer» C. -1 | |
| 15. |
In a shorted line, the reflection coefficient will be |
| A. | 0 |
| B. | 1 |
| C. | -1 |
| D. | ‚àû |
| Answer» D. ‚Äö√Ñ√∂‚àö‚Ć‚àö¬™ | |
| 16. |
The short circuit impedance of the transmission line is given by |
| A. | Z<sub>SC</sub> = j Zo tan βl |
| B. | Z<sub>SC</sub> = -j Zo tan βl |
| C. | Z<sub>SC</sub> = j Zo cot βl |
| D. | Z<sub>SC</sub> = -j Zo cot βl |
| Answer» B. Z<sub>SC</sub> = -j Zo tan ‚âà√≠‚Äö√¢¬ßl | |
| 17. |
The open circuit impedance of the transmission line is given by |
| A. | Z<sub>OC</sub> = j Zo tan βl |
| B. | Z<sub>OC</sub> = – j Zo tan βl |
| C. | Z<sub>OC</sub> = j Zo cot βl |
| D. | Z<sub>OC</sub> = -j Zo cot βl |
| Answer» E. | |