MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
A function f(x) is odd, when? |
| A. | f(x) = -f(x) |
| B. | f(x) = f(-x) |
| C. | f(x) = -f(x)f(-x) |
| D. | f(x) = f(x)f(-x) |
| Answer» B. f(x) = f(-x) | |
| 2. |
Modulation is used to separate differing transmission. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
The output stage of television transmitters is most likely to be a __________ |
| A. | Grid modulated class C amplifier |
| B. | Grid modulated class A amplifier |
| C. | Plate modulated class C amplifier |
| D. | Plate modulated class A amplifier |
| Answer» B. Grid modulated class A amplifier | |
| 4. |
Spectral density express ________ |
| A. | Average voltage |
| B. | Average power in a waveform as a function of frequency |
| C. | Average noise voltage |
| D. | Average channel capacity |
| Answer» C. Average noise voltage | |
| 5. |
MODULATION_IS_USED_TO_SEPARATE_DIFFERING_TRANSMISSION.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
A_function_f(x)_is_odd,_when?$ |
| A. | f(x) = -f(x) |
| B. | f(x) = f(-x) |
| C. | f(x) = -f(x)f(-x) |
| D. | f(x) = f(x)f(-x) |
| Answer» B. f(x) = f(-x) | |
| 7. |
The output stage of television transmitters is most likely to be a _________? |
| A. | Grid modulated class C amplifier |
| B. | Grid modulated class A amplifier |
| C. | Plate modulated class C amplifier |
| D. | Plate modulated class A amplifier |
| Answer» B. Grid modulated class A amplifier | |
| 8. |
For providing two or more voice circuits on the same carrier, we can use _________ |
| A. | SSB |
| B. | ISB systems |
| C. | DSB-SC |
| D. | VSB |
| Answer» C. DSB-SC | |
| 9. |
What will be the value of modulation if we want maximum undistorted transmitted power? |
| A. | 0 |
| B. | 1 |
| C. | 0.2 |
| D. | 0.5 |
| Answer» C. 0.2 | |
| 10. |
For a Gaussian process, auto correction also implies _________ |
| A. | Statistical dependance |
| B. | Statistical independence |
| C. | Statistical distribution |
| D. | Ergodic process |
| Answer» C. Statistical distribution | |
| 11. |
Spectral density express________ |
| A. | Average voltage |
| B. | Average power in a waveform as a function of frequency |
| C. | Average noise voltage |
| D. | Average channel capacity |
| Answer» C. Average noise voltage | |
| 12. |
For a periodic function, the spectral density and auto-correlation functions are ________ |
| A. | Laplace transform pair |
| B. | Fourier transform pair |
| C. | Gauss transform pair |
| D. | Z-transform pair |
| Answer» C. Gauss transform pair | |