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. |
Frequency modulated broadcast band generally lies in ________ |
| A. | VHF |
| B. | HF |
| C. | SHF |
| D. | LF |
| Answer» B. HF | |
| 2. |
Which of the following modulation is used for radio navigation? |
| A. | Pulse Modulation |
| B. | Amplitude Modulation |
| C. | Phase Modulation |
| D. | Frequency Modulation |
| Answer» B. Amplitude Modulation | |
| 3. |
Inherently most noise resistant modulating system is _________ |
| A. | PCM |
| B. | DSB |
| C. | SSB |
| D. | VSB |
| Answer» B. DSB | |
| 4. |
WHICH_OF_THE_FOLLOWING_MODULATION_IS_USED_FOR_RADIO_NAVIGATION??$ |
| A. | Pulse Modulation |
| B. | Amplitude Modulation |
| C. | Phase Modulation |
| D. | Frequency Modulation |
| Answer» B. Amplitude Modulation | |
| 5. |
Frequency_modulated_broadcast_band_generally_lies_in_________$ |
| A. | VHF |
| B. | HF |
| C. | SHF |
| D. | LF |
| Answer» B. HF | |
| 6. |
Inherently most noise resistant modulating system is ________? |
| A. | PCM |
| B. | DSB |
| C. | SSB |
| D. | VSB |
| Answer» B. DSB | |
| 7. |
For demodulation of PCM, it is first converted into ________ |
| A. | PAM |
| B. | PWM |
| C. | PPM |
| D. | FM |
| Answer» B. PWM | |
| 8. |
Which of the following is not a part of analogue communication? |
| A. | PPM |
| B. | AM |
| C. | PCM |
| D. | PWM |
| Answer» D. PWM | |
| 9. |
Which of the following is used for demodulation of PAM signal? |
| A. | a band reject filter |
| B. | a band pass filter |
| C. | a low pass filter |
| D. | a high pass filter |
| Answer» D. a high pass filter | |
| 10. |
What is duty cycle? |
| A. | ratio of time on to time off |
| B. | ratio of time off to time on |
| C. | <sup>1</sup>‚ÅÑ<sub>2</sub> √ó (ratio of time on to time off) |
| D. | <sup>1</sup>‚ÅÑ<sub>2</sub> √ó (ratio of time off to time on) |
| Answer» B. ratio of time off to time on | |
| 11. |
What is the approximated range of audio frequencies? |
| A. | 20Hz to 20KHz |
| B. | 20Hz to 200KHz |
| C. | 10Hz to 10KHz |
| D. | 20Hz to 20MHz |
| Answer» B. 20Hz to 200KHz | |
| 12. |
Which of the following oscillator is not found in FM? |
| A. | Hartley Oscillator |
| B. | Crystal Oscillator |
| C. | Armstrong Oscillator |
| D. | Dynatron Oscillator |
| Answer» C. Armstrong Oscillator | |