Civil Engineering Objective Books Survey Questions - Set 09 - ObjectiveBooks

# Practice Test: Question Set - 09

1. Direct method of contouring is
(A) A quick method
(B) Adopted for large surveys only
(C) Most accurate method
(D) Suitable for hilly terrains

2. A lemniscate curve will not be transitional throughout, if its deflection angle, is
(A) 45°
(B) 60°
(C) 90°
(D) 120°

3. If vertical angles of inclined sights do not exceed 10° and non-verticality of the staff remains within 1°, stadia system of tacheometric observations are made on
(A) Staff normal
(B) Staff vertical
(C) Staff normal as well as vertical
(D) None of these

4. The staff reading at a distance of 80 m from a level with the bubble at its centre is 1.31 m. When the bubble is moved by 5 divisions out of the centre, the reading is 1.39 m. The angular value of the one division of the bubble, is
(A) 28.8 sec
(B) 41.25 sec
(C) 14.52 sec
(D) 25.05 sec

5. On a diagonal scale, it is possible to read up to
(A) One dimension
(B) Two dimensions
(C) Three dimensions
(D) Four dimensions

6. The methods used for locating the plane table stations are
(ii) Traversing
(iii) Intersection
(iv) Resection
(A) (i) and (ii)
(B) (iii) and (iv)
(C) (ii) and (iv)
(D) (i) and (iii)

7. Reduced bearing of a line is an angle between
(A) North line and given line measured clockwise
(B) North line and given line measured anticlockwise
(C) East or west and the given line
(D) Given line and the part of the meridian whether N end or S end, lying adjacent to it

8. In horizontal angles, the error due to imperfect levelling of the plate bubble is
(A) Large when sights are nearly level
(B) Large for long sights
(C) Less for steeply inclined sights
(D) Large for steeply inclined sights

9. If the chain line which runs along N-S direction is horizontal and the ground in E-W direction is sloping
(A) It is possible to set offsets correctly on east side
(B) It is possible to set offsets correctly on east side
(C) It is not possible to set offsets correctly on west side
(D) It is possible to set offsets correctly on both sides

10. If ‘h’ is the difference in level between end points separated by ‘l’, then the slope correction is [(h2/2l) + (h4/8l3)]. The second term may be neglected if the value of ‘h’ in a 20 m distance is less than
(A) ½ m
(B) 1 m
(C) 2 m
(D) 3 m

11. With the rise of temperature, the sensitivity of a bubble tube
(A) Decreases
(B) Increases
(C) Remains unaffected
(D) None of the above

12. Flint glass
(A) Has slightly the greater refracting power than crown glass
(B) Has roughly double refracting power than that of crown
(C) And crown glass proportions yield the required focal length and neutralise the dispersion produced by the convex lens at the emergence from the concave
(D) All the above

13. The imaginary line passing through the intersection of cross hairs and the optical centre of the objective, is known as
(A) Line of sight
(B) Line of collimation
(C) Axis of the telescope
(D) None of these

14. During levelling if back sight is more than foresight
(A) The forward staff is at lower point
(B) The back staff is at lower point
(C) The difference in level, cannot be ascertained
(D) None of these

15. Pick up the correct statement from the following:
(A) The tangent screw enables to give small movement under conditions of smooth and positive control
(B) Standing on the tripod is the levelling head or trib arch
(C) The levelling screws are used to tilt the instrument so that its rotation axis is truly vertical
(D) All the above

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