Importance of Surveying to Civil Engineers MCQ Test - Set 24 - ObjectiveBooks

# Practice Test: Question Set - 24

1. Two concave lenses of 60 cm focal length are cemented on either side of a convex lens of 15 cm focal length. The focal length of the combination is
(A) 10 cm
(B) 20 cm
(C) 30 cm
(D) 40 cm

2. Cross-staff is used for
(A) Setting out right angles
(C) Taking levels
(D) Measuring distances

3. The staff intercept will be
(A) Greater farther off the staff is held
(B) Smaller, farther off the staff is held
(C) Smaller, nearer the staff is held
(D) Same, wherever the staff is held

4. A bearing of a line is also known as
(A) Magnetic bearing
(B) True bearing
(C) Azimuth
(D) Reduced bearing

5. ABCD is a rectangular plot of land. If the bearing of the side AB is 75°, the bearing of DC is
(A) 75°
(B) 255°
(C) 105°
(D) 285°

6. For indirect ranging, number of ranging rods required, is
(A) 1
(B) 2
(C) 3
(D) 4

7. An ideal transition curve is
(A) Cubic parabola
(B) Cubic spiral
(C) Clothoid spiral
(D) True spiral

8. Ranging in chain survey means
(A) Looking at an isolated point not on the line
(B) Establishing an intermediate point on the line
(C) Determining the distance between end points
(D) Determining the offset distance

9. A well conditioned triangle has no angle less than
(A) 20°
(B) 30°
(C) 45°
(D) 60°

10. Geodetic surveying is undertaken
(A) For production of accurate maps of wide areas
(B) For developing the science of geodesy
(C) Making use of most accurate instruments and methods of observation
(D) All the above

11. For preparation of a contour plan for a route survey
(A) Method of squares is used
(B) Method of trace contour is used
(C) Method of cross profile is used
(D) Indirect method of contouring is used

12. A sewer is laid from a manhole ‘A’ to a manhole ‘B’, 250 m away along a gradient of 1 in 125. If the reduced level of the invert at ‘A’ is 205.75 m and the height of the boning rod is 3 m, the reduced level of the sight rail at ‘B’, is
(A) 208.75 m
(B) 202.75 m
(C) 206.75 m
(D) 211.75 m

13. A back sight
(A) Is always taken on a point of known elevation or can be computed
(B) Is added to the known level to obtain the instrument height
(C) Taken on an inverted staff is treated as negative
(D) All the above

14. Removal of parallax, may be achieved by focusing
(A) The objective
(B) The eye-piece
(C) The objective and the eye-piece
(D) None of these

15. The angle of intersection of a contour and a ridge line, is
(A) 30°
(B) 45°
(C) 60°
(D) 90°

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