7-54. Which of the following rules should NOT be  applied  when  you  are  positioning loudspeakers  in  a  room? 1. When  a  motion  picture  projector  is used,  the  loudspeaker  should  be placed  near  the  screen 2. The  loudspeakers  should  not  face each  other 3. The loudspeakers should face the microphone 4. The loudspeakers should be placed directly  in  front  of  the  audience Learning Objective: Identify the various  components  of  a  tape  recorder; recognize  the  function  of  the  tape recorder;  delineate  the  proper procedures  for  the  use  and  main- tenance of the tape recorder. 7-55. When you are positioning a tape recorder to  record  a  presentation,  the  recorder should be placed on a hard, smooth surface. 1. True 2. False 7-56. When you are recording on a tape recorder through  a  microphone,  squealing  would result  if  the  microphone  is  positioned too far away from the tape recording speaker. 1. True 2. False On  a  tape  recorder,  sound  is  produced  by magnetizing  the  coating  of  iron  oxide  on  the tape. Bar magnets of varying length and depth are created. In answering questions 7-57 through  7-60,  select  from  column  B  the  types of  sounds  that  would  be  produced  by  the  type of bar magnets listed in column A. A. Magnets B. Sounds 7-57. Long bar magnets   1. High notes 7-58. Short bar magnets   2. Strong signals 7-59. Deep  magnets 3. Low notes 7-60. Shallow  magnets 4.  Weak  signals 7-61. With  normal  use  and  care,  tape  recorders require  very  little  maintenance. 1. True 2.  False 7-62. Under  normal  operating  procedures,  tape recorders  should  be  lubricated  how often, if at all? 1. Once a month 2. Once every 6 months 3. After each use 4. Normally,  no  lubrication  is necessary 7-63. Faint recordings and poor playback of tapes may be caused by which of the following  adverse  conditions  of  the tape  recorder? 1. Dirty  capstan 2. Dirty pressure roller 3. Dirty erase heads 4. Each of the above 48