MCQOPTIONS
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MCQOPTIONS
This section includes 15 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 characteristic impedance of the transmission line with R= 45 ohm and G= 0.45 mho is |
| A. | 100 |
| B. | 1 |
| C. | 0.1 |
| D. | 10 |
| Answer» E. | |
| 2. |
The velocity of an electromagnetic wave with frequency 6MHz and a skin depth of 1.6 μm. |
| A. | 3.75 |
| B. | 0.26 |
| C. | 9.6 |
| D. | 7.8 |
| Answer» D. 7.8 | |
| 3. |
Given that R = 20 ohm, L = 40 mH, C = 40 μF, G = 0.02 mho. Find whether the line is distortionless or not. |
| A. | Distorted line |
| B. | Distortionless line |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» C. All of the mentioned | |
| 4. |
FOR_R=_20_OHM_AND_G=_0.8_MHO,_THE_ATTENUATION_CONSTANT_WILL_BE?$ |
| A. | 16 |
| B. | 4 |
| C. | 2 |
| D. | 32 |
| Answer» B. 4 | |
| 5. |
The characteristic impedance of the transmission line with R= 45 ohm and G= 0.45 mho is$ |
| A. | 100 |
| B. | 1 |
| C. | 0.1 |
| D. | 10 |
| Answer» E. | |
| 6. |
The_velocity_of_an_electromagnetic_wave_with_frequency_6MHz_and_a_skin_depth_of_1.6_μm.$# |
| A. | 3.75 |
| B. | 0.26 |
| C. | 9.6 |
| D. | 7.8 |
| Answer» D. 7.8 | |
| 7. |
The distortionless line is one in which the attenuation constant and phase constant are independent of the frequency. State true/false. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Given that R = 20 ohm, L = 40 mH, C = 40 μF, G = 0.02 mho. Find whether the line is distortionless or not?# |
| A. | Distorted line |
| B. | Distortionless line |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» C. All of the mentioned | |
| 9. |
The condition that holds good in a distortionless transmission line is |
| A. | R/L = G/C |
| B. | RL = GC |
| C. | L/R = C/G |
| D. | RG/LC |
| Answer» B. RL = GC | |
| 10. |
The velocity of the transmission line with a frequency of 35 radian/s and phase constant of 68.5 is |
| A. | 1.95 |
| B. | 2.36 |
| C. | 4.56 |
| D. | 3.48 |
| Answer» B. 2.36 | |
| 11. |
The attenuation constant is measured in the units of |
| A. | Ohm |
| B. | Neper |
| C. | Decibel |
| D. | Radian/sec |
| Answer» C. Decibel | |
| 12. |
The characteristic impedance of the line having primary constants L and C as 35 milli henry and 70 micro farad respectively is |
| A. | 500 |
| B. | 22.36 |
| C. | 125 |
| D. | 50 |
| Answer» C. 125 | |
| 13. |
Which two parameters given below are zero in the lossless line? |
| A. | L, C |
| B. | C, G |
| C. | G, α |
| D. | R, L |
| Answer» D. R, L | |
| 14. |
The resistance of a lossless transmission line is |
| A. | 0 |
| B. | 1 |
| C. | -1 |
| D. | Infinity |
| Answer» B. 1 | |
| 15. |
The transmission line is said to be lossless when the |
| A. | Conductor is perfect and dielectric is lossless |
| B. | Conductor is perfect and dielectric is lossy |
| C. | Conductor is imperfect and dielectric is lossy |
| D. | Conductor is imperfect and dielectric is lossless |
| Answer» B. Conductor is perfect and dielectric is lossy | |