MCQOPTIONS
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MCQOPTIONS
This section includes 14 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. |
What do you understand by isotropic antenna? |
| A. | it radiates its power uniformly in all directions |
| B. | it radiates its power non-uniformly in all directions |
| C. | it radiates its power specifically in one direction only |
| D. | it does not radiate any power |
| Answer» B. it radiates its power non-uniformly in all directions | |
| 2. |
Radiation resistance of an antenna is ________ |
| A. | a dc resistance |
| B. | an ac resistance |
| C. | a constant value |
| D. | neither ac nor dc resistance |
| Answer» C. a constant value | |
| 3. |
If AM transmitter has low level modulation then it has ________ |
| A. | high efficiency |
| B. | poor efficiency |
| C. | high modulating power |
| D. | high resistance towards noise |
| Answer» C. high modulating power | |
| 4. |
Which among the following is the Analog Continuous Modulation technique? |
| A. | PAM |
| B. | PCM |
| C. | AM |
| D. | PM |
| Answer» D. PM | |
| 5. |
VHF stands for ________ |
| A. | very high frequency |
| B. | very high electric field |
| C. | very high magnetic field |
| D. | very high electromagnetic field |
| Answer» B. very high electric field | |
| 6. |
UHF stands for ________ |
| A. | Ultra High Electric Field |
| B. | Ultraviolet High Frequency |
| C. | Ultra High Frequency |
| D. | Ultra High Magnetic Field |
| Answer» D. Ultra High Magnetic Field | |
| 7. |
Distance between direct broadcasting satellite and earth’s surface is ________ |
| A. | 4500km |
| B. | 33000km |
| C. | 5200km |
| D. | 36000km |
| Answer» E. | |
| 8. |
WHAT_DO_YOU_UNDERSTAND_BY_ISOTROPIC_ANTENNA??$ |
| A. | it radiates its power uniformly in all directions |
| B. | it radiates its power non-uniformly in all directions |
| C. | it radiates its power specifically in one direction only |
| D. | it does not radiate any power |
| Answer» B. it radiates its power non-uniformly in all directions | |
| 9. |
RADIATION_RESISTANCE_OF_AN_ANTENNA_IS_________?$ |
| A. | a dc resistance |
| B. | an ac resistance |
| C. | a constant value |
| D. | neither ac nor dc resistance |
| Answer» C. a constant value | |
| 10. |
If AM transmitter has low level modulation then it has _______? |
| A. | high efficiency |
| B. | poor efficiency |
| C. | high modulating power |
| D. | high resistance towards noise |
| Answer» C. high modulating power | |
| 11. |
ITU stands for ________ |
| A. | Indian Telecommunication Union |
| B. | Indian Telephonic Union |
| C. | International Telephonic Union |
| D. | International Telecommunication Union |
| Answer» E. | |
| 12. |
Effective noise at high frequencies is ________ |
| A. | Johnson noise |
| B. | Flicker noise |
| C. | transit-time noise |
| D. | Partition noise |
| Answer» D. Partition noise | |
| 13. |
What is the ITU designation range for VHF? |
| A. | 30 to 300 Kilohertz |
| B. | 300 to 3000 Kilohertz |
| C. | 30 to 300 Megahertz |
| D. | 3 to 30 Megahertz |
| Answer» D. 3 to 30 Megahertz | |
| 14. |
Distance between direct broadcasting satellite and earth’s surface is ________ |
| A. | 4500km |
| B. | 33000km |
| C. | 5200km |
| D. | 36000km |
| Answer» E. | |