IN ANSWERING QUESTIONS 4-40 THROUGH 4-43, SELECT FROM COLUMN B THE COMPONENT OF THE SONAR SET THAT IS ASSOCIATED WITH THE FUNCTIONS LISTED IN COLUMN A. A. FUNCTIONS B. COMPONENTS 4-40. 4-41. 4-42. 4-43. Displays target 1. Dome echoes on a CRT control Provides the pilot 2. Azimuth and with digital range range and bearing indicator information 3. Recorder Energizes the reeling machine 4. Bearing and raise and lower range sequence indicator Displays target echoes on a paper chart 4-44. In the event the hydraulic system fails in the cable reeling machine, the sonar set operator should activate what switch to raise the dome? 1. RAISE/LOWER switch 2. SEAT switch 3. TRAIL switch 4. AUXILIARY RAISE switch 4-45. What tool is provided the sonar set operator to manually retrieve lowered cable and dome in the event of an electrical or hydraulic failure? 1. Speed wrench 2. Block and tackle 3. Turnbuckle 4. Pulley arrangement 4-46. What is/are the function(s) of a hydrophone? 1. Sound transmission only 2. Sound reception only 3. Sound transmission and reception only 4. Sound transmission, reception, and inversion IN ANSWERING QUESTIONS 4-47 THROUGH 4-49, SELECT FROM COLUMN B THE FUNCTION OF EACH OF THE PROJECTOR ASSEMBLY COMPONENTS LISTED IN COLUMN A. NOT ALL RESPONSES IN COLUMN B ARE USED. A. COMPONENTS B. FUNCTIONS 4-47. Projector 1. Radiates directional 4-48. Fluxgate compass pulses into the air 4-49. Pressure potentiometer 2. Converts electrical pulses to acoustic pulses 3. Provides a signal to indicate dome azimuth deviation relative to magnetic north 4. Provides a signal to indicate how deep the dome is submerged 4-50. The stave assemblies in the hydrophone assembly function to 1. measure the temperature of the water 2. measure the depth of the dome in the water 3. convert acoustic signals into electrical signals 4. convert low-level ac signals Into acoustic signals 4-51. How often, if ever, must the hydrophone be adjusted? 1. Every 28 days 2. Every 56 days 3. Every 112 days 4. Never 27