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Avionics Practice Test: Surveillance Systems, Mapping and Multimode Radars
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Surveillance Systems, Mapping and Multimode Radars topics include: Electronic scanned array radar, primary and secondary radar, modes s system, traffic alert, collision avoidance system and weather radar. Multi-mode radars are radars that can operate in multiple modes at the same time. They are typically used for military applications such as search and track operations or air defense missions. The Mode S system is a secondary surveillance and communication system that supports Air Traffic Control (ATC). It is a Secondary Surveillance Radar process that allows selective interrogation of... Show more
Avionics Practice Test: Surveillance Systems, Mapping and Multimode Radars
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25 Questions

1. The strength of a secondary radar varies inversely with distance to the ______ power.
2. What is the fundamental limitation of the radar that is overcome by Electronic scanned array radars?
3. TCAS I provide proximity warning only.
4. What is the time separation for P1 and P3 for mode A secondary radar?
5. Which of the following are present in an ESA?
6. What is the frequency of operation of weather radar?
7. A power of 5 kW to 50 kW is required even when using narrow beams.
8. Whisper shout is used to avoid garble in TCAS.
9. What is the reflected pulse in primary radar called?
10. The ability of the antenna to turn radiated energy into conducted energy is called ____________
11. How does mode S system differ from mode A and C?
12. What does the threshold number for Tau depend on?
13. How well a target backscatters radar depends on ________
14. Which of the following cannot be measured in primary radar?
15. What is the full form of RADAR?
16. AESA is more reliable than PESA.
17. How does mode S identify each aircraft?
18. A mode S transponder is silent when it is not interrogated.
19. The error caused by two aircraft flying close to each other replying to the same interrogation pulse is called ______
20. AESA can alter its transmitting and receiving patterns.
21. Which of the following determines the direction of the antenna beam in ESA?
22. What is the gain required by a weather radar antenna?
23. What is the minimum safe approach distance for a radar system operating in excess of 5kWhr?
24. The undesirable responses from buildings and clouds for the radar pulse are called as __________
25. Which of the following is false with respect to PESA?