MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Software Defined Radio knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The point at which the output noise power of the fundamental signal shifts away from the ideal output power by 1-dB is called 1-dB expansion point. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The NPR for an SDR can be determined by matching the radio noise floor to the ADC input noise level. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
The sampling rate of promising SDR technology ranges between _____ |
| A. | 1 MHz 100 MHz |
| B. | 10 MHz 100 MHz |
| C. | 1 MHz 1 GHz |
| D. | 1 MHz 10 GHz |
| Answer» C. 1 MHz 1 GHz | |
| 4. |
Which of the following conditions does not affect SNR? |
| A. | Small signals in an environment of strong interference |
| B. | Wide band channelized receiver |
| C. | High fidelity instrumentation |
| D. | High dynamic range |
| Answer» E. | |
| 5. |
Which of the following metrics is considered for spread spectrum method? |
| A. | SNR |
| B. | SNR, SFDR |
| C. | SNR, SFDR, NPR |
| D. | SNR, NPR |
| Answer» D. SNR, NPR | |
| 6. |
Which of the following applications takes only SFDR as its performance metric? |
| A. | Spread spectrum access |
| B. | Wideband digital receiver |
| C. | Cellular Phone |
| D. | Spectrum analysis |
| Answer» C. Cellular Phone | |
| 7. |
If Wais the receiver bandwidth and NF is the noise figure, the noise power of a noise limited receiver is given by the expression ____ |
| A. | P<sub>m</sub>=-184dBm+10log(W<sub>a</sub>)+NF |
| B. | P<sub>m</sub>=-174dBm+10log(W<sub>a</sub>)+NF |
| C. | P<sub>m</sub>=-174dBm+10log(NF)+W<sub>a</sub> |
| D. | P<sub>m</sub>=-184dBm+10log(NF)+W<sub>a</sub> |
| Answer» C. P<sub>m</sub>=-174dBm+10log(NF)+W<sub>a</sub> | |
| 8. |
The ratio of ______ the notch filter to the ____ the notch filter gives the Noise Power Ratio. |
| A. | maximum spectral density inside, spectral density outside |
| B. | spectral density inside , maximum spectral density outside |
| C. | spectral density outside, maximum spectral density inside |
| D. | maximum spectral density outside, spectral density inside |
| Answer» D. maximum spectral density outside, spectral density inside | |
| 9. |
Which of the following is the preferred metric when the desired signal bandwidth is less than Nyquist bandwidth? |
| A. | Noise Power Ratio |
| B. | Spurious Free Dynamic Range (SFDR) |
| C. | Full Power Analog Input Bandwidth |
| D. | Half Power Analog Input Bandwidth |
| Answer» C. Full Power Analog Input Bandwidth | |
| 10. |
Signal to noise ratio is the preferred metric when ____ |
| A. | desired signal bandwidth is less than Nyquist bandwidth |
| B. | desired signal bandwidth is approximately equal to Nyquist bandwidth |
| C. | desired signal bandwidth is greater than Nyquist bandwidth |
| D. | bandpass sampling is used |
| Answer» C. desired signal bandwidth is greater than Nyquist bandwidth | |
| 11. |
The point of intersection of the fundamental signal with the power of third-order intermodulation product is called as _____ |
| A. | input-referenced third-order intercept point |
| B. | output-referenced third-order intercept point |
| C. | input-referenced third-order intermodulation point |
| D. | output-reference third-order intermodulation point |
| Answer» B. output-referenced third-order intercept point | |
| 12. |
Which of the following influences the spurious free dynamic range? |
| A. | Second-order intercept |
| B. | Second-order intermodulation product |
| C. | Third-order intercept |
| D. | Third-order intermodulation product |
| Answer» E. | |
| 13. |
____ and ____ are the parameters that define software defined radio applications. |
| A. | Linearity, SNR |
| B. | Dynamic range, SNR |
| C. | Linearity, Dynamic range |
| D. | Bandwidth, SNR |
| Answer» D. Bandwidth, SNR | |
| 14. |
Limited dynamic range in digital RF system can be improved by _____ |
| A. | digital filter |
| B. | digital amplifier |
| C. | digital equalizer |
| D. | digital suppressor |
| Answer» B. digital amplifier | |
| 15. |
Which of the following is not a part of traditional RF subsystems? |
| A. | Filter |
| B. | Low noise amplifier |
| C. | Multiplexer |
| D. | Frequency translation |
| Answer» D. Frequency translation | |