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51
In optical reading instruments.
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Answer: Option D
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52
The main function of levelling is either to determine the elevations and to determine . . . . . . . . in elevation of the given points.
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Answer: Option B
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53
The line joining the point of commencement to point of tangency called . . . . . . . .
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Answer: Option B
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54
Error due to imperfect focussing of eye piece and object lens cdmes under.
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Answer: Option C
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55
Length of the chord calculated by the formule.
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Answer: Option C
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56
The whole circle bearings of two lines are 80°and 300°.The interior angle included between two lines is . . . . . . . .
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Answer: Option C
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57
The horizontal angle which the magnetic meridian makes with the true meridian is known . . . . . . . .
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Answer: Option A
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58
Chain triangulation involves measurement of . . . . . . . .
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Answer: Option A
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59
The curve which is having a single arc of a circle connecting two straights called
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Answer: Option D
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60
For a curve of radious 100m and normal chord 10m, the Rankine's deflection angle is
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Answer: Option D
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