31. Which of the following is not level.
32. When a chord is less than the normal chord called as . . . . . . . .
33. A survey in which the effect of earth a curvature is taken into account is known as . . . . . . . .
34. A final route will be selected basing on . . . . . . . .
35. The method in which stadia hairs are kept at fixed interval and the intercept on the levelling staff varies depending upon the horizontal distance between the instrument and staff called . . . . . . . .
36. The purpose of providing a brass counter weight on one of the straight arms of circular disc of the compass is to . . . . . . . .
37. Which types of surveys are to be adopted to fix the boundaries of enclosed lands
38. Subsidary stations are joined by which lines . . . . . . . .
39. Hypotenusal allowance for a chain of 100 links measuring along a slope of 45° is . . . . . . . .
40. In determining true north we use.
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