IN ANSWERING QUESTION 3-53, REFER TO FIGURE 3-11 IN THE TEXTBOOK. 3-53. With the llD13A in the automatic search mode, what feature on the B-scope can be used to mark an area of target return? 1. Range sweep 2. Acquisition symbol 3 4:' Jizzle Horizon line 3-54. What does the artificial horizon line indicate in a fire control radar set automatic search mode of operation? 1. Target elevation 2. Target track 3. Aircraft track 4. Aircraft attitude 3-55. Which of the following items does NOT constitute the major display differences between the automatic and manual search modes? 1. The acquisition marks bracket the B-trace 2. The acquisition marks move with the B-trace 3. The antenna is controllable in azimuth 4. Artificial horizon line is manually controlled 3-56. In the operation of a fire control radar set, what action begins the time period for acquisition? 1. Lock on is obtained 2. Power is applied 3. The operator switches antenna control from automatic to manual search 4. The operator places the acquisition symbol over the selected target IN ANSWERING QUESTION 3-57, REFER TO FIGURE 3-13 IN THE TEXTBOOK. 3-57. Which of the following indications is removed from the B-scope display during automatic track mode of a fire control radar set? 1. Acquisition symbol 2. Range strobe 3. Steering dot 4. Range circle 3-58. What is indicated by the steering dot of a fire control radar set? 1. Antenna azimuth 2. Antenna elevation 3. Antenna position 4. Antenna range 3-59. In the automatic track mode of a fire control radar set, what happens when the system breaks lock on? 1. The system reverts to the manual search mode 2. The system reverts to the automatic search mode 3. The system reverts to the manual track mode 4. The system remains in automatic track mode and reacquires the target when it is within required parameters 3-60. Which of the following events occurs in the fire control radar set breakaway mode? 1. The range circle appears 2. The large X  appears 3. The steering dot disappears 4. The range notch disappears 3-61. Which of the following displays is used in the fire control radar bomb director mode of operation? 1. A-scope 2. E-scope 3. C-scope 4. Depressed-center PPI 20