As applied to staff readings, the corrections for curvature and refraction are respectively The above table shows a part of a level field book. The value of X should be________________? A. 98.70B. 100.00 C. 102.30 D. 103.30
If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is_________________? A. 99.345 m B. 100.345 m C. 100.655m D. 101.870m
The following sights are taken on a “turning point”________________? A. foresight only B. backsight onlyC. foresight and backsight D. foresight and intermediate sight
Which of the following errors can be eliminated by taking mean of bot face observations ? A. error due to imperfect graduations B. error due to eccentricity of verniers C. error due to imperfect adjustment of plate levelsD. error due…
If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to_________________? 1. altitude bubble on index frame 2. altitude bubble on index frame if it is…
Theodolite is an instrument used for_________________? A. tightening the capstan-headed nuts of level tube B. measurement of horizontal angles only C. measurement of vertical angles onlyD. measurement of both horizontal and vertical angles
Which of the following errors cannot be eliminated by taking both face observations ? A. error due to horizontal axis not being perpendicular to the vertical axis B. index error i.e. error due to imperfect adjustment of the vertical circle…
In the double application of principle of reversion, the apparent error is_______________? A. equal to true error B. half the true error C. two times the true errorD. four times the true error
If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will_________________? A. increase B. decrease C. not change D. either ‘a’ or ‘b’
A’level line’is a______________? A. horizontal lineB. line parallel to the mean spheriodal surface of earth C. line passing through the center of cross hairs and the center of eye piece D. line passing through the objective lens and the eye-piece…