1000+ Advanced Surveying MCQ for UPSC CDS [Solved]

1. 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 ?
B. f sec ?/H
C. f/H
D. f/H cos ½?
Answer : A

2. The negative sign is assigned to
A. Reduction to mean sea level
B. Correction for horizontal alignment
C. Correction for slope
D. All the above
Answer : D

3. The necessary geometrical condition for triangulation adjustment is:
A. The sum of the angles around a station should be 360°
B. The sum of the three angles of a plane triangle should be 180°
C. The sum of the eight angles of a braced quadrilateral should be 360°
D. All the above
Answer : D

4. Pick up the in-correct statement from the following:
A. Correction for refraction is always negative
B. Correction for parallax is always positive
C. Correction for semi-diameter is always negative
D. Correction for dip is always negative
Answer : C

5. Pick up the correct statement for horizontal photographs.
A. Parallel lines do not appear parallel in central projection
B. The two sides of a road meet at the vanishing point
C. The lines parallel to the negative plane are projected as parallel lines
D. All the above
Answer : D

6. The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is
A. B = bH/f
B. B =f/bH
C. B = b/fH
D. B = H/bf
Answer : A

7. 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
Answer : D

8. The coverage is least if photography is
A. High oblique
B. Low oblique
C. Vertical
D. None of these
Answer : C

9. Pick up the correct statement from the following:
A. If the applied tension to the tape is more than the standard, the tension correction is positive
B. If the applied tension to the tape is less than the standard, the tension correction is negative
C. If the temperature during measurement is greater than the standard temperature, the temperature correction is positive
D. All the above
Answer : D

10. The moon rotates round the earth once in every
A. 29 days
B. 29.35 days
C. 29.53 days
D. 30 days
Answer : B

11. If ? is the declination of the Polaris and ? is the latitude of the place, the azimuth of the Polaris, is
A. cos ?/cos ?
B. cos (90° - ?)/cos (90° - ?)
C. sin (90° - ?)/sin (90° - ?)
D. tan (90° + ?)/tan (90° + ?)
Answer : A

12. In field astronomy, the quantities observed are entirely
A. Lengths
B. Angles
C. Heights
D. All of these
Answer : B

13. Polaris is usually observed for the determination of the azimuth when it is
A. At culmination
B. At elongation
C. Neither at culmination nor at elongation
D. Either at culmination or at elongation
Answer : B

14. The principal line is the line joining the principal point and
A. Nadir
B. Isocenter
C. Perspective centre
D. None of these
Answer : B

15. Pick up the correct statement from the following:
A. The star's movement is apparent due to the actual steady rotation of the earth about its axis
B. The stars move round in circular concentrated parts
C. The centre of the circular paths of stars is the celestial pole
D. All the above
Answer : D

16. The distance between the minor control point and the principal point should be equal to
A. Base line of the left photograph of stereo pair
B. Base line of the right photograph of stereo pair
C. Sum of the base lines of stereo pair
D. Mean of the base lines of the stereo pair
Answer : D

17. The altitudes of a circumpolar star at culminations are 70° and 10°, both culminations being north of zenith. The declination of the star, is
A. 80°
B. 70°
C. 60°
D. 50°
Answer : C

18. To have greatest coverage of the area, the type of photography used, is
A. High oblique
B. Low oblique
C. Vertical
D. None of these
Answer : A

19. Pick up the correct statement from the following:
A. The sun's right ascension increases for 0 h to 24 h when it returns to the First point of Aries
B. The maximum declination of the sun increases up to 23 ½° N on about 21st June
C. The minimum declination of the sun is zero' on 22nd September
D. All the above
Answer : D

20. The relief displacement of a building 72 m high on photograph is 7.2 mm and its top appears 10 cm away from principal point. The flying height of the camera, is
A. 500 m
B. 1000 m
C. 1500 m
D. 2000 m
Answer : B

21. If a star whose declination is 60° N culminates at zenith, its altitude at the lower culmination, is
A. 10°
B. 20°
C. 30°
D. 40°
Answer : C

22. The meridian of a place is
A. A great circle passing through the place and the poles
B. A great circle whose plane is perpendicular to the axis of rotation and it also passes through the place
C. A semi-circle which passes through the place and is terminated at the poles
D. An arc of the great circle which passes through the place and is perpendicular to the equator
Answer : C

23. If ? is the declination of the star and ? is the latitude of the observer, then the azimuth of the star at elongation is given by
A. sin z = sec ? . cos ?
B. cos z = sec ? . cos ?
C. tan z = sec ? . cos ?
D. None of these
Answer : A

24. Pick up the correct statement from the following:
A. Sidereal time at any instant is equal to the hour angle of the first point of Aries
B. Local sidereal time of any place is equal to the right ascension of its meridian
C. Sidereal time is equal to the right ascension of a star at its upper transit
D. All the above
Answer : D

25. The station where observations are not made, but the angles at the station are used in triangulation series, is known as
A. Satellite station
B. Subsidiary station
C. Pivot station
D. Main station
Answer : C

26. The latitude of a place was obtained by subtracting the declination of a star from its zenith distance, the observed star was between
A. Horizon and equator
B. Zenith and pole
C. Equator and zenith
D. Pole and horizon
Answer : A

27. The parallax equation ?p = Bm?h/H - h is applicable to entire overlap of the photographs only if parallax is measured
A. Normal to base line
B. Parallel to base line
C. Both (a) and (b)
D. Neither (a) nor (b)
Answer : B

28. The time interval between successive transits of the moon, is
A. 24 hours 10 minutes
B. 20 hours 25 minutes
C. 24 hours 50 minutes
D. 23 hours 50 minutes
Answer : C

29. Latitude of a place is the angular distance from
A. Greenwich to the place
B. Equator to the poles
C. Equator to the nearer pole
D. None of these
Answer : D

30. Pick up the correct statement from the following:
A. The vertical plane containing the zenith, the station of observation and the celestial pole is the observer's meridian plane
B. The angle between the direction of star in vertical plane and the direction of the star in horizontal plane is called the altitude of the star
C. The complement of the altitude of star is called the zenith distance of the star
D. All the above
Answer : D

31. Pick up the correct statement from the following:
A. Ursa Minor's remains always north of pole star
B. Polar star remains always north of Polaris
C. Polaris remains always north of Ursa Minor's
D. Ursa Minor's pole star and Polaris are the names of the same star
Answer : D

32. A plate parallel is the line on the plane of the negative
A. Parallel to the principal line
B. Perpendicular to the principal line
C. Along the bisector of the angle between the principal line and a perpendicular line through principal plane
D. None of these
Answer : B

33. The correction for parallax, is
A. - 8.8 cos ?
B. + .8 sin ?
C. + 8.8 cos ?
D. - 8.8 cos ?
Answer : C

34. If the image of a triangulation station of R.L. 500 m is 4 cm from the principal point of a vertical photo taken from an altitude of 2000 m, above datum, the height displacement will be
A. 2 mm
B. 4 mm
C. 6 mm
D. 10 mm
Answer : D

35. If the equatorial distance between two meridians is 100 km, their distance at 60° latitude will be
A. 1000 km
B. 800 km
C. 600 km
D. 500 km
Answer : D

36. If the distance between the projectors is altered by a movement along X-axis of one projector,
A. The length of the air base is increased
B. The scale of the model is altered
C. y-parallax is not affected
D. All the above
Answer : D

37. The point where a vertical line through the optical centre of the camera lens intersects the ground, is known as
A. Ground principal point
B. Ground plumb point
C. Iso-centre
D. Perspective centre
Answer : B

38. Longitude of a place is the angular distance between the meridian of the place and
A. The standard meridian
B. The international date line
C. That of Greenwich
D. Both (a) and (c) of above
Answer : D

39. The station which is selected close to the main triangulation station, to avoid intervening obstruction, is not known as
A. Satellite station
B. Eccentric station
C. False station
D. Pivot station
Answer : D

40. The stereo plotting instruments are generally manufactured on the principle ofA. Optical projection
B. Optical mechanism projection
C. Mechanical projection
D. All the above
Answer : D

41. The correction applied to the measured base of length L is
A. Tension = (P - Ps)L/AE
B. Sag = L³w²/24P² where w is the weight of tape/m
C. Slope = (h²/2L) + (h⁴/8L³) where h is height difference of end supports
D. All the above
Answer : D

42. 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
Answer : B

43. In a spherical triangle ABC, right angled at C, sin b equals
A. sin a cos A
B. cos a sin A
C. tan a cot A
D. cot A tan a
Answer : C

44. In triangulation surveys
A. The area is divided into triangular figures
B. Control stations are located from which detailed surveys are carried out
C. Sides are not measured excepting the base line
D. All the above
Answer : D

45. 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
Answer : B

46. If ? is the observed altitude, the refraction correction in seconds, is
A. 58 cot ?
B. 58 tan ?
C. 58 sin ?
D. 58 cos ?
Answer : A

47. At lower culmination, the pole star moves
A. Eastward
B. Westward
C. Northward
D. Southward
Answer : A

48. Pick up the correct statement from the following:
A. Aerial photographs may be either vertical or oblique
B. Vertical photographs are taken with the axis of camera pointing vertically downward
C. Vertical photographs are used for most accurate maps
D. All the above
Answer : D

49. The station pointer is generally used in
A. Triangulation surveying
B. Astronomical surveying
C. Hydrographical surveying
D. Photogrammetric surveying
Answer : C

50. The latitude of a place was obtained by subtracting the zenith distance of a star from its declination, the observed star was between
A. Horizon and equator
B. Equator and zenith
C. Zenith and pole
D. Pole and horizon
Answer : C