MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Wireless Mobile Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Power density is basically termed as ________ power per unit area. |
| A. | Reflected |
| B. | Refracted |
| C. | Radiated |
| D. | Diffracted |
| Answer» D. Diffracted | |
| 2. |
In ionosphere propagation, waves arriving at the receiving antenna using the phenomenon of _______ |
| A. | Scattering |
| B. | Refraction |
| C. | Diffraction |
| D. | Radiation |
| Answer» B. Refraction | |
| 3. |
RCS of scattering object is defined as the ratio of _______ |
| A. | Power density of signal scattered to power density of radio wave incident |
| B. | Power density of radio wave incident to power density of signal scattered |
| C. | Power density of incident waves to power density of reflected wave |
| D. | Power density of reflected wave to power density of incident waves |
| Answer» B. Power density of radio wave incident to power density of signal scattered | |
| 4. |
A surface is considered rough if protuberance is ________ than critical height. |
| A. | Equal |
| B. | Less |
| C. | Greater |
| D. | No relation |
| Answer» D. No relation | |
| 5. |
Surface roughness are often tested using __________ |
| A. | Rayleigh criterion |
| B. | Lawson criterion |
| C. | Barkhausen stability criterion |
| D. | Nyquist criterion |
| Answer» B. Lawson criterion | |
| 6. |
Scattering occurs when medium consists of objects with dimensions _______ compared to the wavelength. |
| A. | Same |
| B. | Small |
| C. | Large |
| D. | Very large |
| Answer» C. Large | |
| 7. |
IN_IONOSPHERE_PROPAGATION,_WAVES_ARRIVING_AT_THE_RECEIVING_ANTENNA_USING_THE_PHENOMENON_OF________?$ |
| A. | Scattering |
| B. | Refraction |
| C. | Diffraction |
| D. | Radiation |
| Answer» B. Refraction | |
| 8. |
Power_density_is_basically_termed_as__________power_per_unit_area.$ |
| A. | Reflected |
| B. | Refracted |
| C. | Radiated |
| D. | Diffracted |
| Answer» D. Diffracted | |
| 9. |
Which equation is used to calculate the received power due to scattering for urban mobile radio system? |
| A. | Laplace equation |
| B. | Bistatic radar equation |
| C. | Poisson’s equation |
| D. | Maxwell equation |
| Answer» C. Poisson‚Äö√Ñ√∂‚àö√ë‚àö¬•s equation | |
| 10. |
RCS of scattering object is defined as the ratio of ______ |
| A. | Power density of signal scattered to power density of radio wave incident |
| B. | Power density of radio wave incident to power density of signal scattered |
| C. | Power density of incident waves to power density of reflected wave |
| D. | Power density of reflected wave to power density of incident waves |
| Answer» B. Power density of radio wave incident to power density of signal scattered | |
| 11. |
A surface is considered rough if protuberance is ______ than critical height. |
| A. | Equal |
| B. | Less |
| C. | Greater |
| D. | No relation |
| Answer» D. No relation | |
| 12. |
Surface roughness are often tested using ______ |
| A. | Rayleigh criterion |
| B. | Lawson criterion |
| C. | Barkhausen stability criterion |
| D. | Nyquist criterion |
| Answer» B. Lawson criterion | |
| 13. |
Scattered energy in all directions provides _________ at a receiver. |
| A. | Channels |
| B. | Loss of signal |
| C. | No energy |
| D. | Additional radio energy |
| Answer» E. | |
| 14. |
The actual received signal is ______ than what is predicted by reflection and diffraction model. |
| A. | Weaker |
| B. | Equal |
| C. | Stronger |
| D. | Very weak |
| Answer» D. Very weak | |
| 15. |
Scattered waves are produced at ________ |
| A. | Rough surface |
| B. | Shadowed region |
| C. | Smooth surface |
| D. | Horizon |
| Answer» B. Shadowed region | |
| 16. |
Scattering occurs when medium consists of objects with dimensions _______ compared to wavelength. |
| A. | Same |
| B. | Small |
| C. | Large |
| D. | Very large |
| Answer» C. Large | |