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Assignment 2-Cont. - 14101_108
Assignment 2-Cont. - 14101_110

Fire Controlman Volume 04-Fire Control Maintenance Concepts
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2-23. What is one of the most commonly used reference planes because of the ease of using a spirit level to determine the plane? 1.   Vertical 2.   Horizontal 3.   Parallel 4.  Perpendicular 2-24. Train angles are measured in what direction from the reference direction on the top of the plane? 1. Clockwise 2. Counterclockwise 3. Bottom to top 4. Top to bottom 2-25.  The  difference  or  displacement  between  two  reference frames may be of which of the following types? 1. Linear and angular only 2. Spatial and linear only 3. Angular and spatial only 4. Linear, angular, and spatial 2-26.  What  are  the  corrections  made  necessary  by  the  linear displacement between the reference planes called? 1. Angular displacements 2. Parallax corrections 3. Typical references 4. Static angular corrections 2-27.  Corrections  arising  from  reference  directions  or reference planes not being parallel are called 1. parallax corrections 2. rotational corrections 3. static parallax corrections 4.  dynamic  parallax  confections gun 2-28.  When  the  angle  between  the  reference  planes  is relatively  small,  where  is  the  major  difference? 1. In the horizontal plane 2. In the vertical plane 3. In the elevation angles 4. In the bearing angles 2-29. All of the following equipment is commonly used for battery alignment except which one? 1. Alignment sights 2. Frequency counters 3.  Benchmarks 4. Dials 2-30. A theodolite is very similar to what other equipment used  during  alignment? 1. Alignment sights 2.  Clinometers 3.   Transits 4.   Levels 2-31. Clinometers are used for measuring inclinations in what plane? 1.   Vertical 2.  Reference 3.  Horizontal 4.   Spatial 2-32. How many types of levels are used in systems align- ment? 1.  One 2.  Two 3.  Three 4.   Four 2-33. The pointing  line  in  alignment  sights  maybe  of  which of the following types? 1. The centerline of a torpedo tube only 2. The propagation axis of a radar beam only 3. The bore axis of a gun only 4. The centerline of a torpedo tube, the propagation axis of a radar beam, and/or the bore axis of a 2-34. What is brought into exact alignment with the gun- bore axis when the boresight telescope is inserted into the gun bore? 1.  AOS 2.  LOS 3.  MTI 4.  RPP 9






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