MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Microwave Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Pulse radar operating at 10GHz frequency has an antenna with a gain of 28 dB and a transmitted power of 2kW. If it is desired to detect a target of cross section 12m2, and the minimum detectable signal is -90 dBm, the maximum range of the radar is: |
| A. | 8114 m |
| B. | 2348 m |
| C. | 1256 m |
| D. | 4563 m |
| Answer» B. 2348 m | |
| 2. |
In military applications the radar cross sections of vehicles is minimized. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Construction of pulse radar is much simpler than a Doppler radar. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
IN_MILITARY_APPLICATIONS_THE_RADAR_CROSS_SECTIONS_OF_VEHICLES_IS_MINIMIZED.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Pulse radar operating at 10GHz frequency has an antenna with a gain of 28 dB and a transmitted power of 2kW. If it is desired to detect a target of cross section 12m2, and the minimum detectable signal is -90 dBm, the maximum range of the radar is:$ |
| A. | 8114 m |
| B. | 2348 m |
| C. | 1256 m |
| D. | 4563 m |
| Answer» B. 2348 m | |
| 6. |
Construction of pulse radar is much simpler than a Doppler radar? |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
A ________ determines the target range by measuring the round trip time of a pulsed microwave signal. |
| A. | Pulse radar |
| B. | Doppler radar |
| C. | Cross section radar |
| D. | None of the mentioned |
| Answer» B. Doppler radar | |
| 8. |
The term radar cross section defines the: |
| A. | Scattering ability of the target |
| B. | Power radiating ability of the radar |
| C. | Amount of energy scattered by unwanted objects |
| D. | Cross section of radar area through which energy is emitted |
| Answer» B. Power radiating ability of the radar | |
| 9. |
When a power Pt is transmitted by an antenna, amount of energy incident on the target is given by the expression: |
| A. | Pt×G/4πR<sup>2</sup> |
| B. | Pt/4πR<sup>2</sup> |
| C. | Pt×4 πR<sup>2</sup>/G |
| D. | None of the mentioned |
| Answer» B. Pt/4‚âà√¨‚àö√ëR<sup>2</sup> | |
| 10. |
For applications like missile fire control, bistatic radars are used. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
The radar in which both transmission and reception is done using the same antenna are called: |
| A. | Monostatic radar |
| B. | Bistatic radar |
| C. | Monopole radar |
| D. | Dipole radar |
| Answer» B. Bistatic radar | |
| 12. |
For radar system, antennas with a large beam width are preferred over narrow beam antennas. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
In a RADAR system the transmitter of the radar is more sensitive than the receiver. |
| A. | True |
| B. | False |
| Answer» C. | |