### Civil Engineering - Advanced Surveying MCQs Part 4

1. If two points differing by 1° of latitude and of the same longitude is 110 km apart on the earth, then two astronomical positions on the moon is about

A.
10 km
B.
25 km
C.
30 km
D.
50 km.

2. The distance between the projection centre and the photograph, is called

A.
principal distance
B.
principal line
C.
isocentric distance
D.
focal length.

3. The zenith is the point on the celestial sphere

A.
east of observer
B.
west of observer
C.
north of observer
D.
south of observer
E.
above the observer.

4. 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
E.
five times.

5. 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.

6. The sidereal day is the time interval between two successive upper transits of

A. mean sun
B. first point of Aries
C. first point of Libra
D. the polar star
E. moon.

7. Pick up the correct statement from the following :

A. the horizontal direction of the pole is called astronomical north.
B. the angle between the direction of true north and the direction of a survey line is called astronomical bearing
C. the astronomical bearing is generally called azimuth
D. all the above.

8. 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.

9. 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.

10. If δ is the declination of the Polaris and λ is the latitude of the place, the azimuth of the polaris, is

A.
B.
C.
D. .

11. Stellar astronomy deals with

A. plane surveying
B. geodetic surveying
C. star observations
D. planet observations.

12. 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°
E. 60°.

13. The longitudes of two places at latitude 60° N are 93° E and 97° W. Their departure is

A. 5100 nautical miles
B. 5700 nautical miles
C. 120 nautical miles
D. 500 nautical miles
E. none of these.

14. The point at which sun's declination changes from north to south, is known as

A. first point of Aeries
B. first point of Libra
C. vernal Equinox
D. autumnal Equinox
E. both (b) and (d) of the above.

15. 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.

16. A star in northern sphere is said to transit

A. when its altitude is maximum
B. when its azimuth is 180°
C. when it is in south
D. all the above.

17. In observations of equal precision, the most probable values of the observed quantities are those that render the sum of the squares of the residual errors a minimum, is the fundamental principle of

A. Gauss' Mid Latitude formula
B. Delamber's method
C. Legendr's method
D. Least square method.

18. Pick up the incorrect statement from the following. The angular distance of hevenly bodies on observer's meridian measured from the pole, is

A. co-declination
B. co-altitude
C. co-latitude
D. polar distance
E. none of these.

19. Pick up the correct statement from the following :

A. Centre of the celestial sphere is taken as the position of the observer
B. Centre of the celestial sphere is taken as the centre of the earth
C. stars move and maintain their relative positions
D. Celestial bodies though fixed, appear to revolve from east to west round the celestial pole.
E. All the above.

20. Parallax bar measures

A. parallax
B. height
C. parallax difference
D. height difference.

21. 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.

22. 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
E. none of these.

23. 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.

24. In a spherical triangle ABC right angled at C, sin b equals to

A. sin c sin B
B. cos c cos B
C. tan c tan B
D. sin c cos B
E. cos c sin B.

25. The slotted template method

A. is prepared, by graphical method
B. is suitable for large areas with less control
C. is rapid and accurate
D. may be done on any scale
E. all the above.

26. The declination and right ascension of the sun becomes 23° 27' S and 270° respectively on

A. March 21
B. June 21
C. September 21
D. December 22.

27. The product of the distances of plumb point and horizon point of a vertical photograph from its principal point, is

A. f2
B. 2f2
C. 3f2
D. f
E. f

28. The principal line is the line joining the principal point and

B. isocentre
C. perspective centre
D. none of these.

29. Longitudes are measured from 0° to

A. 180° eastward
B. 180° westward
C. 180° east or westward
D. 360° eastward
E. 360° westward.

30. 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. relative orientation is not affected
E. all the above.

31. Rotation of the camera at exposure about horizontal axis normal to the line of flight, is known as

A. swing
B. tilt
C. tip
D. none of these.

32. The solar tidal force divided by lunar tidal force is

A.
B.
C.
D. .

33. At lower culmination, the pole star moves

A. eastward
B. westward
C. northward
D. southward.

34. If δ is the declination of the star and φ is the latitude of the observer, then the azimuth of the star at elongation is given by

A. sin z = sec φ . cos δ
B. cos z = sec φ . cos δ
C. tan z = sec φ . cos δ
D. none of these.

35. 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°
E. 40°.

36. 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.

37. Pick up the correct statement from the following :

A. The measured stereoscopic base of photographs is obtained by dividing the air base in metres by the mean scale of the photograph
B. The difference between the absolute parallax of two points depends upon the difference in their elevations
C. The line joining the principal point of a photograph and the transferred principal point of the adjoining photograph, is called stereoscopic base
D. all the above.

38. For plane ground the scale of a vertical photograph will be same as that of a tiled photograph along the photo parallel through

A. isocentre
B. plumb point
C. principal point
D. none of these.

39. 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. December 21 to Mach 21
E. both (a) and (b) of above.

40. H is the flying height above mean ground level and f is the principal distance of a vertical photograph. The mean scale of the photographs is

A. H . f
B.
C.
D. H + f
E. none of these.

41. 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
E. 23 hours 25 minutes.

42. At the first point of Aeries, the sun moves

A. northward
B. southward
C. from south to north of the equator
D. from north to south of the equator.

43. The declination and right ascension of the sun are each equal to zero on

A. March 21
B. June 21
C. September 21
D. December 22.

44. From the principal point the horizon point lies on the principal line at a distance of

A. f tan θ
B. f sin θ
C. f cot θ
D. f cos θ.

45. The polaris remains below horizon at

A. 10° N
B. 50° N Latitude
C. equator
D. 5° S latitude.

46. If δ is the declination of the star and φ is the latitude of the observer then the hour angle of the star at elongation is given by

A. sin H = tan φ . cot δ
B. cos H = tan φ . cot δ
C. tan H = tan φ . cot δ
D. none of these.

47. At upper culmination, the pole star moves

A. eastward
B. westward
C. northward
D. southward.

48. G.M.T. corresponding to given mean time, equals

A. L.M.T. - East longitude in time
B. L.M.T. + East longitude in time
C. L.M.T. - West longitude in time
D. none of the these.

49. 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° N on about 21st June
C. the minimum declination of the sun is zero' on 22nd September
D. the maximum declination of the sun is about 23° S on 21st December
E. all the above.

50. Latitude of the observer's position is equal to altitude of

A. north pole
B. pole star
C. celestial pole
D. all the above.