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Assignment 10, Continued - 14081_629
Assignment 10, Continued - 14081_631

Equipment Operator Basic - Beginning construction equipment operators manual
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10-63. On the blower type of drill, cuttings are removed in what manner? 1. By blowing water from the bottom of the hole 2. By a steady supply of air passing  through  the  drill steel 3. By  stopping  the  drill  and blowing  the  cuttings  out through  the  drill  steel 4. By  stopping  the  drill  and blowing the hole for 30 seconds after every 2 feet or 1 minute of drilling operations 10-64. Drill  manufacturers  recommend installing  the  in-line  oiler within how many feet from the drill? 1. 10 to 12 feet 2. 15 to 20 feet 3. 20 to 25 feet 4. 25 to 30 feet 10-65. Which of the following pneumatic tools is built for heavy-duty use on  timber  construction  work  and may be used for ripping as well as  cross  cutting? 1. Chain  saw 2. Nail  driver 3. Drill 4. Circular  saw Learning  Objective: Recognize  the principles  of  the  crawler-mounted rock  drill. 10-66. The  crawler-mounted  rock  drill  is a  self-propelled  unit  designed primarily  to  perform  which  of  the following   operations? 1. Drill  water  wells 2. Drill  auger  holes 3. Drill  vertical  holes  only 4. Drill  vertical  and  angular blast holes in rock 10–67. The  compressor  discharge  air volume of the rock drill is what maximum cfm? 1. 230 2. 200 3. 130 4. 100 10–68. The feed motor is capable of exerting a maximum pull up of how  many  pounds? 1. 2,410  pounds 2. 3,410  pounds 3. 4,410  pounds 4. 5,410  pounds 10-69. Which  of  the  following  control levers is used when drilling boreholes  and  coupling  and uncoupling  drill  steel? 1. The fast feed 2. The drill 3. The  rotation 4. The slow speed 10-70. What is the function of the vaposol  system? 1. To throw a mist down the blow hole to control dust 2. To throw a mist through the drill  steel  to  control  cooling 3. To throw a mist around the drill  area  to  control  dust 4. To throw a mist down the borehole  to  achieve  the optimum  moisture  content required  for  compaction  of a blast hole 10–71. Before drilling, the blow air pressure  gauge  should  indicate what minimum psi? 1. 50 2. 100 3. 150 4. 200 78







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