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. |
On which factor the bandwidth required for a modulated carrier depends? |
| A. | baseband frequency range |
| B. | signal to noise ratio |
| C. | carrier frequency |
| D. | amplitude of carrier frequency |
| Answer» B. signal to noise ratio | |
| 2. |
Mixing is used in communication to ________ |
| A. | raise the carrier frequency |
| B. | lower the carrier frequency |
| C. | to altered the deviation |
| D. | to change the carrier frequency to any required value |
| Answer» E. | |
| 3. |
What is the full form of AFC? |
| A. | Amplitude to frequency conversion |
| B. | Automatic frequency conversion |
| C. | Automatic frequency control |
| D. | Audio frequency control |
| Answer» D. Audio frequency control | |
| 4. |
A class D amplifiers is very efficient than other amplifiers. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
MIXING_IS_USED_IN_COMMUNICATION_TO_________?$ |
| A. | raise the carrier frequency |
| B. | lower the carrier frequency |
| C. | to altered the deviation |
| D. | to change the carrier frequency to any required value |
| Answer» E. | |
| 6. |
On_which_factor_the_bandwidth_required_for_a_modulated_carrier_depends?$ |
| A. | baseband frequency range |
| B. | signal to noise ratio |
| C. | carrier frequency |
| D. | amplitude of carrier frequency |
| Answer» B. signal to noise ratio | |
| 7. |
The carrier is suppressed in ________ |
| A. | a mixer |
| B. | a frequency multiplier |
| C. | a transducer |
| D. | a balance modulator |
| Answer» E. | |
| 8. |
What we called a resistor if a transmitter is connected to a resistor instead of an antenna? |
| A. | a test load |
| B. | a temporary load |
| C. | a dummy load |
| D. | a heavy load |
| Answer» D. a heavy load | |
| 9. |
Transmitters are designed usually to derive a load impedance of ________ |
| A. | 50 ohms resistive |
| B. | 150 ohms resistive |
| C. | 250 ohms resistive |
| D. | 500 ohms resistive |
| Answer» B. 150 ohms resistive | |
| 10. |
A signal that ________ must have linear power amplifier. |
| A. | is complex |
| B. | has variable frequency |
| C. | is linear |
| D. | has variable amplitude |
| Answer» E. | |
| 11. |
Automatic Level Control (ALC) is used to keep the modulation index close to 100%. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
Baseband compression produces ________ |
| A. | a small range of frequencies from low to high |
| B. | a small range of different phases |
| C. | a small range of angles |
| D. | a small range of amplitude |
| Answer» E. | |