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Questions for AWR

Answer the following questions

1. Is is possible for weather radar to be operated on the ground?
2. A frequency of 10 GHz is considered to be the optimum for use in airborne weather radar system because
3. An airborne weather radar, with a beam width of 4 degrees in azimuth, is being used in the mapping mode. At what maximum range will it be able to detect a 1 nm wide opening in a sea cliff?
4. Which statements relating to the stabilization system of airborne weather radar antennae is true?
5. On a colour airborne weather radar, a bright red echo indicates?
6. In an Airborne Weather Radar the areas of greatest turbulence are usually indicated on the screen by?
7. When switching on the weather radar, after start-up, a single very bright line appears on the screen. This means that the?
8. The tilt angle on the AWR at which an active cloud just disappears from the screen is 4 degrees up. If the beam width is 5 degrees and the range to the cloud is 40 nm use the 1 in 60 rule to calculate the approximate height of the cloud relative to the aircraft?
9. Weather radar is used by the pilot to assist in the?
10. The ISO-ECHO circuit is incorporated in the AWR?
11. In the MAPPING MODE the airborne weather radar utilises a?
12. In an Airborne Weather Radar that has a colour cathode ray tube (CRT) increasing severity of rain and turbulence is generally shown by a change of colour from
13. On the AWR display the most severe turbulence will be shown?
14. A frequency of airborne weather radar is
15. AWR in the __________ Mode progressively _________ As distances ___________ To equalise screen brightness?
16. Airborne weather radars use a frequency of approximately 9 GHz because?
17. The colours used on a conventional AWR to indicate increasing intensity of returns are?
18. To improve the detection of precipitation area(s) in e.g. Thunderstorms, in which the top of the cloud lies at or slightly above the level of flight?
19. In which mode of operation does the aircraft weather radar use a cosecant radiation pattern?
20. In general the operation of airborne weather radar equipment on the ground is
21. The AWR can be used on the ground provided: 1. The aircraft is clear of personnel, buildings and vehicles. 2. The conical beam is selected. 3. Maximum up tilt is selected. 4. The AWR must never be operated on the ground
22. In order to ascertain whether a cloud return on an Aircraft Weather Radar (AWR) is at or above the height of the aircraft, the tilt control should be set to? (Assume a beam width of 5°)
23. Which of the following is a complete list of airborne weather radar antenna stabilisation axes?
24. The airborne weather radar is using a 5 degree beam. The cloud is detected at a range of 60 nm. If the scanner is tilted up to 5 degrees, the cloud disappears. Using trigonometry to determine the height of the tops of the cloud, in relation to the aeroplanes cruising level, select the nearest answer from the following?
25. The main factors, which affect whether an AWR will detect a cloud, are?
26. In the MAPPING MODE the airborne weather radar utilises a
27. An airborne weather radar is using a 3 degrees beam. A cloud is detected at a range of 40 nm, If the scanner is tilted up to 3 degrees the cloud disappears. The top of the cloud, in relation to the aeroplane's cruising level is approximately?
28. An airborne weather radar unit transmits a 5 degrees beam from a parabolic dish aerial reflector assembly. If the wavelength is 4 cm, the diameter of the dish is?
29. Airborne Weather Radar has been primarily developed to detect?
30. The ISO-ECHO facility of an airborne weather radar is provided in order to
31. What frequency is typical chosen for AWR systems?
32. On an AWR the sequence of colours indicating increasing water droplet size is?
33. The theoretical maximum range for an airborne weather radar is determined by the?
34. When using airborne weather radar in the mapping mode in polar areas one runs the risk?
35. A weather radar, set to the 100 NM scale, shows a squall at 50 NM. By changing the scale to 50 NM, the return on the radar screen should
36. The "gain" control knob of an AWR adjusts?
37. Before commencing a flight the weather radar should?
38. An airborne weather radar unit transmits a 4 degrees beam from a parabolic dish aerial reflector assembly. If the wavelength is 3 cm, the diameter of the dish is?
39. Airborne Weather Radars are generally based on the use of?
40. When the airborne weather radar is operating in its primary mode, to detect precipitation?
41. The stabilisation of the weather radar aerial is effective?
42. A side lobe from an aerial of a weather radar may produce an echo on the screen known as a "height ring". The pilot can use this?
43. In an Airborne Weather Radar that has a colour cathode ray tube (CRT) the areas of greatest turbulence are indicated on the screen by
44. In an AWR with a 5 degrees beam width how do you orient the scanner to receive returns from clouds that are at or below your level?
45. On the airborne weather radar display in WX mode, different colours use used?
46. Which of the following list of phenomena are least likely to be detect by airborne weather radar?
47. The heaviest turbulence is likely t be encountered?
48. On a weather radar, the greatest turbulence is likely in an area where targets are?
49. The ISO-ECHO feature of an airborne weather radar can be used to detect?
50. AWR contour mode is used for?