NMAT - Advanced Surveying 1000+ MCQ [Solved] PDF Download

1. 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

2. 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

3. 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
Answer : D

4. The maximum error in radial line assumption, is
A. h/H f tan ?
B. h/H f² tan ?
C. h/H f² sin ?
D. h/H f cos ?
Answer : A

5. 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

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

7. 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

8. With standard meridian as 82° 30' E the standard time at longitude 90° E is 8 h 30 m. The local mean time at the place will be
A. 7 h 00 m
B. 7 h 30 m
C. 8 h 00 m
D. 9 h 00 m
Answer : D

9. The most convenient co-ordinate system for specifying the relative positions of heavenly bodies on the celestial sphere, is
A. Altitude and azimuth system
B. Declination and hour angle system
C. Declination and right ascension system
D. Declination and altitude system
Answer : C

10. 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

11. 23 cm × 23 cm photographs are taken from a flying height with a camera of focal length of 3600 m and 15.23 cm respectively. A parallax difference of 0.01 mm represents
A. 1 m
B. 2 m
C. 4 m
D. 8 m
Answer : A

12. 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

13. Triangulation surveys are carried out for locating
A. Control points for surveys of large areas
B. Control points for photogrammetric surveys
C. Engineering works, i.e. terminal points of long tunnels, bridge abutments, etc.
D. All the above
Answer : D

14. 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
Answer : D

15. The point on the photograph where bisector between the vertical line through optical centre of the camera lens and the plate perpendicular meets, is known as
A. Principal point
B. Isocenter
C. Plumb point
D. Perspective centre
Answer : B

16. The orthogonal projection of the perspective centre on a tilted photograph, is called
A. Nadir
B. Isocenter
C. Principal point
D. Plumb point
Answer : C

17. 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

18. Limiting gradient for locating the base line on evenly-sloping ground, is
A. 1 in 12
B. 1 in 10
C. 1 in 8
D. 1 in 6
Answer : A

19. 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. Both (b) and (d) of the above
Answer : D

20. 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

21. The scale of a vertical photograph of focal length f taken from heght of H metres above M.S.L., at a point of reduced level h, is
A. f/H
B. f/(H + h)
C. f/(H - h)
D. (H - h)/f
Answer : C

22. 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
Answer : B

23. The great circle whose plane is perpendicular to the axis of rotation of the earth, is called
A. Equator
B. Terrestrial equator
C. 0° latitude
D. All the above
Answer : D

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

25. 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
Answer : C

26. 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

27. 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

28. If ? and ? be the latitude of a place and declination of a star respectively, the upper culmination of the star will be north of zenith if its zenith distance, is
A. ? - ?
B. ? - ?
C. ? + ?
D. (? + ?)/2
Answer : A

29. 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

30. 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

31. The great circle which passes through the zenith, nadir and the poles, is known as
A. Meridian
B. Vertical circle
C. Prime vertical
D. None of these
Answer : A

32. The equation which is obtained by multiplying each equation by the coefficient of its un-knowns and by adding the equations thus formed, is known as
A. Observation equation
B. Conditional equation
C. Normal equation
D. None of these
Answer : C

33. 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

34. The circle in which a plane tangent to the earth's surface at the point of observation, intersects the celestial sphere, is called
A. Visible horizon
B. Sensible horizon
C. Celestial horizon
D. True horizon
Answer : B

35. If S is the sum of three angles of a spherical triangle, the spherical excess equals
A. S - 90°
B. S - 180°
C. S - 270°
D. S - 360°
Answer : B

36. 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

37. The rate of change of parallax dp/dh with respect to change in h, may be expressed as
A. fB/(H - h)
B. fB/(H - h)²
C. fB/(H + h)
D. fB/(H + h)²
Answer : B

38. 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

39. Parallax bar measures
A. Parallax
B. Height
C. Parallax difference
D. Height difference
Answer : C

40. For adjusting a quadrilateral whose both the diagonals are observed, the equations of conditions involved, are
A. Two angle equations and two side equations
B. One angle equation and three side equations
C. Three angle equations and one side equation
D. None of these
Answer : C

41. If the altitudes of a star at its upper and lower transits are 60° 30' and 19° 30' respectively, the latitude of the place, is
A. 30°
B. 35°
C. 40°
D. 45°
Answer : C

42. 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. Boh (a) and (b) of above
Answer : D

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

44. 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
Answer : C

45. 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

46. The solar tidal force divided by lunar tidal force is
A. 1/3
B. 1/2
C. 3/4
D. 5/4
Answer : B

47. 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

48. The shortest distance between two places measured along the surface of the earth, is
A. Length of the equator between their longitudes
B. Length of the parallel between their longitudes
C. Length of the arc of the great circle passing through them
D. None of these
Answer : C

49. 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

50. ? 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