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 useful dynamic range applicable for antenna, RF/IF conversion, and ADC s is given by the ratio of smallest processable signal to the smallest detectable signal. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The Nyquist criterion states that the sampling frequency of a band limited analog waveform must be at least ______ component to properly reconstruct the signal. |
| A. | half the maximum frequency |
| B. | twice the maximum frequency |
| C. | half the minimum frequency |
| D. | twice the minimum frequency |
| Answer» C. half the minimum frequency | |
| 3. |
____ fixes the input power dynamic range such that there are no sinusoidal RF conversion artifacts in the output. |
| A. | Noise Figure |
| B. | Two tone intermodulation product |
| C. | Harmonics |
| D. | SFDR |
| Answer» E. | |
| 4. |
Which of the following is not a challenge to RF/IF conversion stage in military application? |
| A. | Low phase noise |
| B. | Tunable pre-selector |
| C. | Single RF/IF up-down conversion |
| D. | Fast tuning synthesizers |
| Answer» D. Fast tuning synthesizers | |
| 5. |
Electronically Programmable Analog Components are also called as ____ |
| A. | FPGA |
| B. | FPAA |
| C. | Gate Array ASIC |
| D. | Cell based ASIC |
| Answer» D. Cell based ASIC | |
| 6. |
10.Which of the following modulation type is incompatible with class C operation? |
| A. | Frequency modulation |
| B. | BPSK |
| C. | QPSK |
| D. | QAM |
| Answer» E. | |
| 7. |
9.RF amplifiers tend to be ____ amplifiers. |
| A. | class A |
| B. | class B |
| C. | class C |
| D. | class AB |
| Answer» D. class AB | |
| 8. |
Superconductors use ____ to maintain working temperature near _____ |
| A. | heat sinks, 70K |
| B. | open cooling system, 80K |
| C. | forced air, 75K |
| D. | closed cooling system, 70K |
| Answer» E. | |
| 9. |
Superconducting analog filters can reduce noise and interference introduced by wide bandwidth of SDR architecture. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
RF MEMS allows selection of ____ and ____, increasing the degree of freedom in design process. |
| A. | digital circuit and reverse engineering |
| B. | analog circuit and reverse engineering |
| C. | digital circuit and reengineering |
| D. | analog circuit and reengineering |
| Answer» C. digital circuit and reengineering | |
| 11. |
The industry standard figure of merit for an RF switch is ______ |
| A. | R0C1 |
| B. | R1C0 |
| C. | C0R1 |
| D. | C1R0 |
| Answer» C. C0R1 | |
| 12. |
In resonators with nanoscale I-beams, which factor does not affect the mechanical frequencies of I-beams? |
| A. | Size |
| B. | Density |
| C. | Stiffness |
| D. | Distance between beam and bottom of the cavity |
| Answer» C. Stiffness | |
| 13. |
Which of these is not a technique used to induce sharp resonance in resonators? |
| A. | Rigidity |
| B. | Bulk |
| C. | Acoustic |
| D. | Piezoelectric |
| Answer» B. Bulk | |
| 14. |
RF MEMS gives _______ alternative to electronic switching circuits. |
| A. | an electromechanical |
| B. | a mechanical |
| C. | an electro-dynamic |
| D. | an interconnected |
| Answer» B. a mechanical | |
| 15. |
RF integrated circuits generally comprise of _____ |
| A. | resonators and resistors |
| B. | resistors |
| C. | diodes |
| D. | resonators and capacitors |
| Answer» E. | |