MCQOPTIONS
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MCQOPTIONS
This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Optical Communication knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The 10-90% rise times for components used in D-IM analog optical link is given. (LED=10ns, Intermodal=9ns/km, Chromatic=2ns/km, APD = 3ns). Link is of 5km. It has an optical bandwidth of 6MHz. Determine maximum permitted system rise time. |
| A. | 58.3ns |
| B. | 54ns |
| C. | 75ns |
| D. | 43.54ns |
| Answer» B. 54ns | |
| 2. |
The 10-90% rise times for components used in D-IM analog optical link is given. (LED=10ns, Intermodal=9ns/km, Chromatic=2ns/km, APD = 3ns). Link is of 5km. Determine the total rise time. |
| A. | 62ns |
| B. | 53ns |
| C. | 50ns |
| D. | 52ns |
| Answer» E. | |
| 3. |
Determine the impedance of a coaxial cable system operating at temperature 17 degree Celsius at output voltage of 5V, 0.85μmwavelength, optical power of 1mW, 70% quantum efficiency and SNR ratio of 1.04 * 104. |
| A. | 80Ω |
| B. | 50Ω |
| C. | 90Ω |
| D. | 100Ω |
| Answer» E. | |
| 4. |
Determine the wavelength of a coaxial cable system operating at temperature 17 degree Celsius at output voltage of 5V, 100Ω impedance, optical power of 1mW, 70% quantum efficiency. |
| A. | 0.39μm |
| B. | 0.60μm |
| C. | 0.85μm |
| D. | 0.98μm |
| Answer» D. 0.98μm | |
| 5. |
Determine the efficiency of a coaxial cable system at 17 degree Celsius with peak output voltage 5V, 0.85 μm wavelength and SNR ratio of 1.04 * 104. |
| A. | 80% |
| B. | 70% |
| C. | 40% |
| D. | 60% |
| Answer» C. 40% | |
| 6. |
Determine the peak output voltage if efficiency is 70%, wavelength is 0.85μm and output power is 1mW. |
| A. | 7V |
| B. | 8V |
| C. | 5V |
| D. | 6V |
| Answer» C. 5V | |
| 7. |
Determine ratio of SNR of coaxial system to SNR of fiber system if peak output voltage is 5V, quantum efficiency of 70%, optical power is 1mW, wavelength of 0.85μm. |
| A. | 1.04 * 104 |
| B. | 2.04 * 104 |
| C. | 3.04 * 104 |
| D. | 4.04 * 104 |
| Answer» B. 2.04 * 104 | |
| 8. |
Determine dispersion equalization penalty without mode coupling if BT is 150 Mbits/s and total rms pulse broadening is 4.8ns. |
| A. | 34 dB |
| B. | 33 dB |
| C. | 76.12 dB |
| D. | 34.38 dB |
| Answer» E. | |
| 9. |
Determine dispersion equalization penalty with mode coupling of 1.7ns if BT is 25 Mbits/s. |
| A. | 4.8 * 104dB |
| B. | 4 * 104dB |
| C. | 4.2 * 104dB |
| D. | 3.8 * 104dB |
| Answer» D. 3.8 * 104dB | |
| 10. |
Determine dispersion equalization penalty if total RMS pulse broadening is 4.8ns, BT is 25 Mbits/s. |
| A. | 0.03 dB |
| B. | 0.08 dB |
| C. | 7 dB |
| D. | 0.01 dB |
| Answer» B. 0.08 dB | |
| 11. |
DETERMINE_THE_IMPEDANCE_OF_A_COAXIAL_CABLE_SYSTEM_OPERATING_AT_TEMPERATURE_17_DEGREE_CELSIUS_AT_OUTPUT_VOLTAGE_OF_5V,_0.85‚ÂÀ√≠¬¨‚À´MWAVELENGTH,_OPTICAL_POWER_OF_1MW,_70%_QUANTUM_EFFICIENCY_AND_SNR_RATIO_OF_1.04_*_104.?$# |
| A. | 80Ω |
| B. | 50Ω |
| C. | 90Ω |
| D. | 100Ω |
| Answer» E. | |
| 12. |
Determine the wavelength of a coaxial cable system operating at temperature 17 degree Celsius at output voltage of 5V, 100Ω impedance, optical power of 1mW, 70% quantum efficiency?# |
| A. | 0.39μm |
| B. | 0.60μm |
| C. | 0.85μm |
| D. | 0.98μm |
| Answer» D. 0.98‚âà√≠¬¨‚à´m | |
| 13. |
Determine the efficiency of a coaxial cable system at 17 degree Celsius with peak output voltage 5V, 0.85μmwavelength and SNR ratio of 1.04 * 104.$ |
| A. | 80% |
| B. | 70% |
| C. | 40% |
| D. | 60% |
| Answer» C. 40% | |
| 14. |
Determine ratio of SNR of coaxial system to SNR of fiber system if peak output voltage is 5V, quantum efficiency of 70%, optical power is 1mW, wavelength of 0.85μm.$ |
| A. | 1.04 * 10<sup>4</sup> |
| B. | 2.04 * 10<sup>4</sup> |
| C. | 3.04 * 10<sup>4</sup> |
| D. | 4.04 * 10<sup>4</sup> |
| Answer» B. 2.04 * 10<sup>4</sup> | |
| 15. |
Determine dispersion equalization penalty without mode coupling if BTis 150 Mbits/s and total rms pulse broadening is 4.8ns. |
| A. | 34 dB |
| B. | 33 dB |
| C. | 76.12 dB |
| D. | 34.38 dB |
| Answer» E. | |
| 16. |
Determine dispersion equalization penalty with mode coupling of 1.7ns if BT is 25 Mbits/s. |
| A. | 4.8 * 10<sup>4</sup>dB |
| B. | 4 * 10<sup>4</sup>dB |
| C. | 4.2 * 10<sup>4</sup>dB |
| D. | 3.8 * 10<sup>4</sup>dB |
| Answer» D. 3.8 * 10<sup>4</sup>dB | |
| 17. |
Determine RMS pulse broadening with mode coupling if pulse broadening is 0.6 over 8km. |
| A. | 1.6ns |
| B. | 1.7ns |
| C. | 1.5ns |
| D. | 1.4ns |
| Answer» C. 1.5ns | |
| 18. |
Determine dispersion equalization penalty if total RMS pulse broadening is 4.8ns, BT is 25 Mbits/s. |
| A. | 0.03 dB |
| B. | 0.08 dB |
| C. | 7 dB |
| D. | 0.01 dB |
| Answer» B. 0.08 dB | |