MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 13 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 IF signal can be input to a demodulator to recover the baseband signal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
In CATV, the signal must be received with a carrier to noise ratio of between __________ |
| A. | 90 and 100 dB |
| B. | 10 and 30 dB |
| C. | 60 and 70 dB |
| D. | 45 and 55 dB |
| Answer» E. | |
| 3. |
Which of the following is the disadvantage of SCM? |
| A. | Source nonlinearity |
| B. | Linearity |
| C. | Distortion |
| D. | Narrow bandwidth |
| Answer» B. Linearity | |
| 4. |
IN_CATV,_THE_SIGNAL_MUST_BE_RECEIVED_WITH_A_CARRIER_TO_NOISE_RATIO_OF_BETWEEN___________?$ |
| A. | 90 and 100 dB |
| B. | 10 and 30 dB |
| C. | 60 and 70 dB |
| D. | 45 and 55 dB |
| Answer» E. | |
| 5. |
The IF signal can be input to a demodulator to recover the baseband signal. State whether the given statement is true or false.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Which of the following techniques is easy to implement? |
| A. | Amplitude shift keying |
| B. | Phase shift keying |
| C. | Frequency shift keying |
| D. | SCM |
| Answer» D. SCM | |
| 7. |
In __________ the microwave frequency are modulated with an optical carrier and transmitted using a single wavelength channel. |
| A. | Subcarrier multiplexing |
| B. | TDM |
| C. | FDM |
| D. | Code division multiplexing |
| Answer» B. TDM | |
| 8. |
_____________ provides operation at high transmission rate. |
| A. | Optical intensity modulators |
| B. | Demodulators |
| C. | Circulators |
| D. | Electro-absorption modulators |
| Answer» E. | |
| 9. |
______________ are the devices which are employed to eliminate the laser chirp. |
| A. | Optical intensity modulators |
| B. | Demodulators |
| C. | Circulators |
| D. | Optical Isolators |
| Answer» B. Demodulators | |
| 10. |
____________ semiconductor laser sources provide low duty cycle pulse streams for subsequent time multiplexing. |
| A. | Diameter preferred |
| B. | Mode locked |
| C. | Divine |
| D. | Depletion |
| Answer» C. Divine | |
| 11. |
A strategy used for increasing the bitrate of digital optical fiber systems beyond the bandwidth capabilities of the drive electronics is known as ___________ |
| A. | Optical time division multiplexing |
| B. | Electrical time division multiplexing |
| C. | Frequency division multiplexing |
| D. | Code division multiplexing |
| Answer» B. Electrical time division multiplexing | |
| 12. |
The practical limitations of the speed of electronic circuits have been pushed towards operational frequencies around ___________ |
| A. | 100 MHz |
| B. | 120 MHz |
| C. | 100GHz |
| D. | 80 Hz |
| Answer» D. 80 Hz | |
| 13. |
What is the full form of ETDM? |
| A. | Electronic tube di-cyclic mechanism |
| B. | Electrical time division multiplexing |
| C. | Emphasis tier division mechanism |
| D. | Electrical tube dielectric medium |
| Answer» C. Emphasis tier division mechanism | |