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

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1.

If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as

2.

In reciprocal levelling, the error which is not completely eliminated, is due to

3.

The least count of a vernier scale is

4.

The true meridian of a place is the line in which earth's surface is intersected by a plane through

5.

Which one of the following procedures for getting accurate orientation is the most distinctive feature of the art of plane tabling

6.

Imaginary line passing through points having equal magnetic declination is termed as

7.

While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates

8.

Prismatic compass is considered more accurate than a surveyor's compass, because

9.

The longitudinal section of the surface of bubble tube is

10.

In tacheometrical observations, vertical staff holding is generally preferred to normal staffing, due to

11.

The direction of steepest slope on a contour, is

12.

The 'fix' of a plane table from three known points, is good, if

13.

The construction of optical square is based, on the principle of optical

14.

Back bearing of a line is equal to

15.

In a constant level tube, size of the bubble remains constant because upper wall is

16.

The ratio of the angles subtended at the eye, by the virtual image and the object, is known as telescope's

17.

A clinometer is used for

18.

Diurnal variation of magnetic declination is

19.

The curve composed of two arcs of different radii having their centres on the opposite side of the curve, is known

20.

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

21.

A traverse deflection angle is

22.

The 'point of curve' of a simple circular curve, is

23.

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

24.

The Random errors tend to accumulate proportionally to

25.

Removal of parallax, may be achieved by focussing

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