Advanced Surveying Test Questions - Set 10 - ObjectiveBooks

# Practice Test: Question Set - 10

1. Circumpolar stars
(A) Rotate round the North Pole
(B) Rotate round the celestial pole
(C) Remain always above the horizon
(D) Are seldom seen near the pole star

2. Pick up the incorrect statement from the following:
(A) In truly vertical photographs without relief angles are true at the plumb point
(B) In tilted photographs without relief, angles are true at the iso-centre
(C) In tilled photographs with relief, angles are true at the principal point
(D) None of these

3. The nearest star is so far away from the earth that the directions to it from two diametrically opposite points on the earth differs less than
(A) 0.01 second
(B) 0.001 second
(C) 0.0001 second
(D) None of these

4. Longitudes are measured from 0° to
(A) 180° eastward
(B) 180° westward
(C) 180° east or westward
(D) 360° eastward

5. At eastern elongation, the pole star moves
(A) Eastward
(B) Westward
(C) Northward
(D) Southward

6. The distance between the projection centre and the photograph, is called
(A) Principal distance
(B) Principal line
(C) Isocentric distance
(D) Focal length

7. If E is the spherical excess and R the radius of the earth, the surface area of the triangle, is
(A) πR²E/90°
(B) πR²E/180°
(C) πR²E/270°
(D) πR²E/360°

8. Accidental errors
(A) Do not follow any definite mathematical law
(B) Cannot be removed by applying corrections to the observed values
(C) Are generally small
(D) All the above

9. According to Napier's Rules of circular parts for a right angled triangle, sine of middle part equals the product of
(A) Tangents of two adjacent parts
(B) Sines of two adjacent parts
(C) Cosines of two adjacent parts
(D) Both (a) and (b) above

10. The correction for parallax, is
(A) - 8".8 cos α
(B) + .8" sin α
(C) + 8".8 cos α
(D) - 8".8 cos α

11. Pick up the correct statement from the following:
(A) North end of the polar axis is known as North Pole
(B) South end of the polar axis is known as South Pole
(C) Point where polar axis when produced northward intersects the celestial sphere, is known as north celestial pole
(D) All the above

12. The angle between the axis of earth and the vertical at the station of observation is called
(A) Astronomical latitude
(B) Astronomical co-latitude
(C) Co-declination of star
(D) Declination of star

13. The method of surveying by triangulation was first introduced by the Dutchman Snell in
(A) 1600
(B) 1615
(C) 1630
(D) 1650

14. The scale of a tilted photograph of focal length f taken from an altitude H, along the plate parallel through principal point is
(A) f/H sec θ
(B) f sec θ/H
(C) f/H
(D) f/H cos ½θ

15. The declination and right ascension of the sun becomes 23° 27' N and 90° respectively on
(A) March 21
(B) June 21
(C) September 21
(D) December 22

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