Figure 10FIN ANSWERING QUESTIONS 10-43 THROUGH10-46, REFER TO FIGURE 10F.YOU ARERUNNING THE LINE AE AND THE POWERHOUSE ISIN YOUR WAY.WHILE AT SETUP B, YOUDiscovered THAT A 30-DEGREE DEFLECTIONANGLE WILL CLEAR THE OBSTACLE.YOUDECIDED TO USE THIS ANGLE TO BYPASS THEPOWERHOUSE.10-43.What is your next step afterrecording the deflection angleat B?1.Take a backsight at A andmeasure angle ABC2.Move the instrument to D andmeasure the deflection angleat D3.Move the instrument to C andmeasure the deflection angleat C4.Move the instrument to A andmeasure angle BAC10-44.If you use the angle offset methodof bypassing an obstacle, what isthe size of the deflection angleat C?1.30°2.45°3.60°4.75°10-45.Which of the following distancesis equal to CD?1. AB2. BD3. DE4. BC10-46.What is the deflection angle atpoint D?1.30°L2.30°R3.60°L4.60°R10-47.The angle offset and theperpendicular offset methods areuseful in establishing a surveyline under which of the followingconditions?1.2.3.4.When the length of the surveyline cannot be determined bychainingWhen the slope becomes greatenough to require breakingchainWhen the line of sight on thechosen survey line isobstructedWhen the backsiqht distance ismuch less than the foresightdistance10-48.The “balancing in” process shouldbe used to locate an intermediatepoint between two control pointson a survey line under which ofthe following conditions?1.2.3.4.When the distances from theintermediate point to thecontrol points areapproximately equalWhen neither control point isvisible from the other, andthe other methods of bypassingan obstacle cannot be usedWhen the intermediate point ismuch closer to one of thecontrol points than it is tothe otherWhen the instrument adjustmenthas a known error71
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