# SSC JE Civil Preliminary Exam in January 2018 | Practice test Day – 54

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1. The least count of a vernier scale is
2. The 'fix' of a plane table from three known points, is good, if
3. Simpson's rule for calculating areas states that the area enclosed by a curvilinear figure divided into an even number of strips of equal width, is equal to
4. While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates
5. In a constant level tube, size of the bubble remains constant because upper wall is
6. A clinometer is used for
7. The true meridian of a place is the line in which earth's surface is intersected by a plane through
8. Imaginary line passing through points having equal magnetic declination is termed as
9. The Random errors tend to accumulate proportionally to
10. Prismatic compass is considered more accurate than a surveyor's compass, because
11. Which one of the following procedures for getting accurate orientation is the most distinctive feature of the art of plane tabling
12. Diurnal variation of magnetic declination is
13. Back bearing of a line is equal to
14. The main plate of a transit is divided into 1080 equal divisions. 60 divisions of the vernier coincide exactly with 59 divisions of the main plate. The transit can read angles accurate upto
15. If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as
16. A traverse deflection angle is
17. In tacheometrical observations, vertical staff holding is generally preferred to normal staffing, due to
18. The direction of steepest slope on a contour, is
19. The 'point of curve' of a simple circular curve, is
20. The ratio of the angles subtended at the eye, by the virtual image and the object, is known as telescope's
21. The construction of optical square is based, on the principle of optical
22. The longitudinal section of the surface of bubble tube is
23. In reciprocal levelling, the error which is not completely eliminated, is due to
24. The curve composed of two arcs of different radii having their centres on the opposite side of the curve, is known
25. Removal of parallax, may be achieved by focussing

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