• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
ASSIGNMENT QUESTIONS - 14069_741
ASSIGNMENT QUESTIONS - 14069_743

Engineering Aid 3 - Beginning Structural engineering guide book
Page Navigation
  702    703    704    705    706  707  708    709    710    711    712  
10-35. To  detect  accidental  movement  when measuring a number of horizontal angles from one setup, you should take  which  of  the  following  steps? 1. Relevel the instrument and check  the  readings occasionally 2. Adjust the instrument before and  after  each  reading 3. Train the instrument at some clearly defined object to serve as a reference mark for checking the sizes of the angles 4. Take the mean of the observed angles 10-36. The  closing-the-horizon  method  of checking the accuracy of angular measurements is based on the geometrical  fact  that  the  sum  of the 1. angles in a triangle are 180° 2. angles around a point are 360° 3. acute angles in a right triangle are 90° 4. interior  angles  of  a  closed five-course  traverse  are  540° 10-37. A vertical angle was recorded at +36°. This  angle  is  a  measurement of what type? 10-38. 1. Inclination 2. Declination 3. Depression 4. Elevation You are measuring a 30° angle with a 1-minute transit. To  improve the  precision  of  this  measurement, you turn the angle a total of four times. If the plate reading after the  fourth  measurement  is  119°59°, what is the size of the angle turned? 1. 29°45’45” 2. 29°59’45” 3. 30°00’15” 4. 30°45’15” 10-39. You  have  measured  an  angle  using the  repetition  procedure. If the original  measurement  was  37°22’ and your sixth and last repeat was 224°12’42”,   what is the mean angle? 10-40. Which  of  the  following  procedures is a method for extending a straight  line? 1. Repeating  angles 2. Averaging sets of backsight points 3. Double  centering 4. Jiggling  in 10-41. What step in the double-centering procedure is taken just before the instrument  is  rotated  through  180° in  the  horizontal  plane? 1. Plunging the telescope 2. Taking the first foresight 3. Taking the backsight 4. Taking the second foresight 10-42. When double centering results in two  different  extension  points, what procedure should you use? 1. 2. 3. 4. Extend your line through the first  point Extend your line through the second  point Extend your line through a point midway between the two extension  points Ignore  both  points  and  start over  again 1. 37°5’7” 2. 37°22’7” 3. 37°10’20” 4. 38°00’57” 70







Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.