1000+ Advanced Surveying MCQ for XAT [Solved]

1. The prime vertical passes through
A. The east point of the horizon
B. The west point of the horizon
C. The zenith point of the observer
D. All the above
Answer : D

2. Pick up the correct statement from the following:
A. One degree of longitude has greatest value at the equator
B. One degree of longitude has greatest value at the poles
C. One degree of longitude has the same value everywhere
D. One degree of latitude decreases from the equator to the poles
Answer : A

3. 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

4. The normal longitudinal overlap is generally kept
A. 50 %
B. 60 %
C. 70 %
D. 75 %
Answer : B

5. 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

6. If ? and ? be the latitude of an observer and declination of a heavenly body respectively, the upper culmination of the body will be south of zenith if its zenith distance, is
A. ? - ?
B. ? - ?
C. ? + ?
D. ½ (? - ?)
Answer : B

7. Places having same latitude
A. Lie on the parallel of the latitude
B. Are equidistant from the nearer pole
C. Are equidistant from both the poles
D. All the above
Answer : D

8. If ? is the declination of the star and ? is the latitude of the observer then the hour angle of the star at elongation is given by
A. sin H = tan ? . cot ?
B. cos H = tan ? . cot ?
C. tan H = tan ? . cot ?
D. None of these
Answer : B

9. The point on the celestial sphere vertically below the observer's position, is called
A. Zenith
B. Celestial point
C. Nadir
D. Pole
Answer : C

10. On vertical photographs, height displacement is
A. Positive for points above datum
B. Negative for points below datum
C. Zero for points vertically below the air station
D. All the above
Answer : D

11. 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

12. Stellar astronomy deals with
A. Plane surveying
B. Geodetic surveying
C. Star observations
D. Planet observations
Answer : C

13. Pick up the in-correct statement from the following:
A. Apparent solar time is measured from the lower transit of the true sun
B. Mean solar time is measured from the lower transit of the mean sun
C. Sidereal time is measured from the lower transit of the first point of Aries
D. Sidereal time is measured from the upper transit of the first point of Aries
Answer : D

14. The altitude of a circumpolar star is maximum when it is
A. At east elongation
B. At upper culmination
C. At west elongation
D. At lower culmination
Answer : B

15. 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

16. Right ascension of a heavenly body is its equatorial angular distance measured
A. Westward from the first point of Libra
B. Eastward from the first point of Aeries
C. Westward from the first point of Aeries
D. Eastward from the first point of Libra
Answer : B

17. ? and ? are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being S and f respectively. Parallax displacement of the point due to relief, is
A. h tan ?/S
B. h tan ?/S
C. h (tan ? + tan ?)/S
D. h (tan ? - tan ?)/S
Answer : C

18. The main object of the astronomer to obtain
A. Astronomical latitude
B. Astronomical longitude
C. Astronomical bearing
D. All of these
Answer : D

19. 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

20. 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

21. At the first point of Aeries, the su moves
A. Northward
B. Southward
C. From south to north of the equator
D. From north to south of the equator
Answer : C

22. The distance between the projection centre and the photograph, is called
A. Principal distance
B. Principal line
C. Isocentric distance
D. Focal length
Answer : A

23. Rotation of the camera at exposure about its vertical axis, is known as
A. Swing
B. Tilt
C. Tip
D. None of these
Answer : A

24. The Polaris remains below horizon at
A. 10° N
B. 50° N Latitude
C. Equator
D. 5° S latitude
Answer : D

25. The nautical mile is the length of
A. 1 minute of latitude
B. 1 minute of longitude
C. 1 degree of latitude
D. 1 degree of longitude
Answer : B

26. 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

27. The angle between the observer's meridian and declination circle of a heavenly body, is known as
A. Hour angle
B. Azimuth
C. Right ascension
D. Declination
Answer : A

28. The principal plane contains
A. Nadir point
B. Iso centre
C. Principal point
D. All the above
Answer : D

29. The position of the sun when its north declination is maximum is known as
A. Vernal equinox
B. Autumnal equinox
C. Summer solstice
D. Winter solstice
Answer : C

30. The height displacement on a vertical photograph
A. Increases as the horizontal distance increases from the principal point
B. Increases as the ground elevation increases
C. Decreases as the flying height increases
D. All the above
Answer : D

31. The altitude of a heavenly body is its angular distance, measured on the vertical circle passing through the body, above
A. Equator
B. Horizon
C. Pole
D. None of these
Answer : B

32. Equation of time which is the difference between apparent solar time and mean solar time at any instant, vanishes during one year
A. Once
B. Twice
C. Thrice
D. Four times
Answer : D

33. 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

34. International Date Line is located along
A. Standard meridian
B. Greenwich meridian
C. Equator
D. 180° longitude
Answer : D

35. Triangulation surveys are carried out for providing
A. Planimetric control
B. Height control
C. Both planimetric and height control
D. None of these
Answer : C

36. Pick up the incorrect statement from the following. High oblique photographs
A. May have tilt up to 30°
B. May include the image of the horizon
C. May not include the image of the horizon
D. None of these
Answer : D

37. The following points form a pair of homologous points:
A. Photo principal point and ground principal point
B. Photo isocenter and ground isocenter
C. Photo plumb point and ground plumb point
D. All the above
Answer : D

38. The great circle along which the sun appears to trace on the celestial sphere with earth as centre during the year, is called
A. Equator
B. Celestial equator
C. Ecliptic
D. None of these
Answer : C

39. The value of geo-centric parallax to be added to the observed altitude of sun is
A. 9 cos ?
B. 9 sin ?
C. 9 tan ?
D. 9 cot ?
Answer : A

40. The sun's declination remains north between
A. March 21 to June 21
B. June 21 to September 21
C. September 21 to December 21
D. Both (a) and (b) of above
Answer : D

41. 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

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

43. 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

44. From the principal point the horizon point lies on the principal line at a distance of
A. f tan ?
B. f sin ?
C. f cot ?
D. f cos ?
Answer : A

45. Homologous points are
A. Opposite corners of a photograph
B. Nodal points of the camera lens
C. Corresponding points on the ground and photograph
D. Plumb points of stereo pair of photographs
Answer : C

46. The hour angle of the heavenly body for Greenwich meridian equals the hour angle of the body for any other meridian + longitude:
A. Mean sun
B. True sun
C. Vernal equinox
D. All the above
Answer : D

47. Pick up the incorrect statement from the following. In a spherical triangle
A. Every angle is less than two right angles
B. Sum of the three angles is equal to two right angles
C. Sum of the three angles less than six right angles and greater than two right angles
D. Sum of any two sides is greater than the third
Answer : B

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

49. The position of a heavenly body on the celestial sphere can be completely specified by
A. Its altitude and azimuth
B. Its declination and hour angle
C. Its declination and right ascension
D. All the above
Answer : D

50. If ?, H, A and ? be the altitude, hour angle, azimuth and declination of a circumpolar star at its elongation, in latitude ?, the following relation holds good
A. cos H = tan ?/tan ?
B. sin ? = sin ?/sin ?
C. sin A = cos ?/cos ?
D. All the above
Answer : D