Answer Happy

2. 7. 8. 9. 10. TRUE/FALSE. Write T if the statement is true, and F if the statement is false. 1. — A steel tape is 5 mm longer than its nominal value of 100 m. Using this tape with an erroneous length will result in a random error. Balancing backsight and foresight distances in leveling is practiced to cancel errors due to curvature and refraction 3. I When the true meridian and the magnetic meridian coincide, the magnetic declination is 0°. 4. In leveling, the leveling party must begin and end on a point of known elevation. 5. Obtaining location and directions from GPS observations is an example of direct observation. 6. E Surveying is an old profession that has not advanced much. Meridians point to the zenith upwards and to the nadir downwards. In leveling, the turning point is where we set up the instrument. It is not advisable to survey on a very windy day. Contour lines very near each other indicates gentle slope. 11. E A typical unit of the pace factor is no. of paces/foot. 12. F In photogrammetry, aerial photographs and images are captured with overlaps to determine elevations 13. A satellite image has a raster data structure. 14. You can compute for the area of a triangle if the distances of the three sides are known. 15. A compound curve is composed of two simple curves. 16. An example of ellipsoid flattening is 299.183900008. 17. Distance measured from a method with a typical accuracy of 1/500 is less accurate than that measured with an accuracy of 1/1,000. 18. GIS means Geodetic Information Systems The velocity of an electromagnetic wave speeds up when passing through the atmosphere. 20. An orthophoto has a uniform scale, hence it can be used as a map. 21. In the design of a road, the choice of vertical curve parameters must consider drainage and safety in the study area. 22. ___ In the metric system, 54 + 51.02 is an example of a station. 23. If you manually round off 128.500034 to the nearest whole number, the answer is 128. 24. Local attraction is very likely present if the magnetic bearing of AB is N20°11'W and that for BA is S20°05'E. 25. The North American Datum of 1983 (NAD 83) is a horizontal datum. 19. ล่