9-43. Which  of  the  following  personnel is  responsible  for  filling  out the  crane  lift  checklist? 1. The  rigger 2. The  signalman 3. The  crane  crew  supervisor 4. The  crane  test  mechanic 9–44. The  rated  capacities  of  mobile cranes are based on what two factors? 1. Width  and  Length 2. Strength  and  stability 3. Rigging  and  winch  pull  capacity 4. Drawbar  pull  and  mobility 9-45. In  situations  where  crane outriggers  cannot  be  fully extended,  you  determine  the  load capacity of a crane by using the “without  outriggers”  load  capacity ratings. 1. True 2. False 9-46. The  boom  angles  for  clamshell operations  should  normally  be between what boom angle degrees? 1. 20° to 30° 2. 30° to 40° 3. 40° to 60° 4. 60° to 80° 9-47. The  boom  angle  for  dragline operations  should  normally  be between what boom angles degrees? 1. 25° to 35° 2. 35° to 45° 3. 45° to 55° 4. 55° to 65° Learning  Objective: Recognize the components and types of pile- driving leads used in the NCF. 9-48. A  pile-driving  hammer  is categorized  under  what  USN number  registration  series? 1. 82-00000 2. 60-00000 3. 42-00000 4. 36-00000 9-49. The  combined  weight  of  all  pile- driving  attachments  reduces  the capacity of the crane. 1. True 2. False 9-50. Pile–driving  leads  serve  what function  during  pile-driving operations? 1. As  tracks  for  the  pile-driving hammer 2. As a guide for positioning a pile 3. As guides for steadying a pile 4. All of the above 9-51. During  what  time  period  should pile-driving  lead  bolts  be  checked for  tightness? 1. At the beginning of each day 2. At the beginning of each week 3. At the beginning of each month 4. At the beginning of each shift 9-52. What type of lead is held plumb or at the desired batter with the second  single  crane  line? 1. Swinging 2. Underhung 3. Extended  four-way 4. Overhead 67