MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the step size of a system is 0.0625, find its quantization power? |
| A. | 3.25 x 10-3 |
| B. | 3.25 x 10-4 |
| C. | 3.25 x 10-2 |
| D. | 3.25 x 10-1 |
| Answer» C. 3.25 x 10-2 | |
| 2. |
Find the step size of a signal with peak to peak amplitude of 4V and is quantized into 64 levels? |
| A. | 32.3 x 10-3 |
| B. | 30.23 x 10-3 |
| C. | 62.5 x 10-3 |
| D. | 53.3 x 10-3 |
| Answer» D. 53.3 x 10-3 | |
| 3. |
Any signal and its Hilbert transform are mutually orthogonal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
An input resistance of 20 Kῼ causes a noise voltage of 10μV. Suppose two input resistance each of 20 Kῼ are connected in parallel, then find the total noise voltage? |
| A. | 8μV |
| B. | 10μV |
| C. | 20μV |
| D. | 13μV |
| Answer» B. 10μV | |
| 5. |
A system has a voltage of 15V and it produces a total current of 1300μA. Find the power of system? |
| A. | 0.025W |
| B. | 0.035W |
| C. | 0.0195W |
| D. | 0.045W |
| Answer» D. 0.045W | |
| 6. |
FIND_THE_STEP_SIZE_OF_A_SIGNAL_WITH_PEAK_TO_PEAK_AMPLITUDE_OF_4V_AND_IS_QUANTIZED_INTO_64_LEVELS??$ |
| A. | 32.3 x 10<sup>-3</sup> |
| B. | 30.23 x 10<sup>-3</sup> |
| C. | 62.5 x 10<sup>-3</sup> |
| D. | 53.3 x 10<sup>-3</sup> |
| Answer» D. 53.3 x 10<sup>-3</sup> | |
| 7. |
If_the_step_size_of_a_system_is_0.0625,_find_its_quantization_power?$ |
| A. | 3.25 x 10<sup>-3</sup> |
| B. | 3.25 x 10<sup>-4</sup> |
| C. | 3.25 x 10<sup>-2</sup> |
| D. | 3.25 x 10<sup>-1</sup> |
| Answer» C. 3.25 x 10<sup>-2</sup> | |
| 8. |
Mostly used radio receivers are? |
| A. | pulsed receivers |
| B. | CW receivers |
| C. | TRF receivers |
| D. | super heterodyne receivers |
| Answer» E. | |
| 9. |
What Squelch circuit does? |
| A. | helps to receive signals that are useful for the system |
| B. | helps to make channel noise free |
| C. | helps to receive two or more than two signals at once |
| D. | helps to suppress the audio output in the absence of sufficiently strong desired signal |
| Answer» E. | |
| 10. |
Modem is combination of both modulator and demodulator. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
An input resistance of 20 Kῼ causes a noise voltage of 10μV. Suppose two input resistance each of 20 Kῼ are connected in parallel, then find the total noise voltage?$ |
| A. | 8μV |
| B. | 10μV |
| C. | 20μV |
| D. | 13μV |
| Answer» B. 10‚âà√≠¬¨‚à´V | |
| 12. |
A system has a voltage of 15V and it produces a total current of 1300μA. Find the power of system?$ |
| A. | 0.025W |
| B. | 0.035W |
| C. | 0.0195W |
| D. | 0.045W |
| Answer» D. 0.045W | |
| 13. |
What you understand by the term discone antenna? |
| A. | combination of disc and cone |
| B. | combination of disc and cone with a spacing of  é/4 |
| C. | combination of disc and cone with a spacing of  é/2 |
| D. | same as a simple antenna |
| Answer» B. combination of disc and cone with a spacing of ¬¨‚Ć‚àö¬©/4 | |
| 14. |
Video signals are transmitted through ________ |
| A. | Frequency Modulation |
| B. | Amplitude Modulation |
| C. | Pulse Modulation |
| D. | Either frequency or amplitude modulation |
| Answer» C. Pulse Modulation | |