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This section includes 195 Mcqs, each offering curated multiple-choice questions to sharpen your Surveying knowledge and support exam preparation. Choose a topic below to get started.
1. |
By applying clockwise swing to right projector, maximum y-parallax is introduced in the model at |
A. | position 1 |
B. | position 2 |
C. | position 4 |
D. | position 6. |
Answer» B. position 2 | |
2. |
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» C. September 21 | |
3. |
The distance between the projection centre and the photograph, is called |
A. | principal distance |
B. | principal line |
C. | isocentric distance |
D. | focal length. |
Answer» B. principal line | |
4. |
The principal line is the line joining the principal point and |
A. | nadir |
B. | isocentre |
C. | perspective centre |
D. | none of these. |
Answer» C. perspective centre | |
5. |
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» B. azimuth | |
6. |
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. |
Answer» E. | |
7. |
The net ground area of a vertical photograph 20 cm x 20 cm on scale 1 : 10,000 having overlaps 60% and 30%, is |
A. | 0.50 sq km |
B. | 0.56 sq km |
C. | 0.60 sq km |
D. | 0.64 sq km. |
Answer» E. | |
8. |
The orthogonal projection of the perspective centre on a tilted photograph, is called |
A. | nadir |
B. | isocentre |
C. | principal point |
D. | plumb point. |
Answer» D. plumb point. | |
9. |
The length of a parallel of λ latitude between two meridians is equal to difference in logitudes multiplied by |
A. | sin λ |
B. | cos λ |
C. | tan λ |
D. | cot λ. |
Answer» C. tan λ | |
10. |
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. |
Answer» E. | |
11. |
The coverage is least if photography is |
A. | high oblique |
B. | low oblique |
C. | vertical |
D. | none of these. |
Answer» D. none of these. | |
12. |
For any star to be a circumpolar star, its |
A. | declination must be 0° |
B. | declination must be 90° |
C. | distance from the pole must be less than the latitude of the observer |
D. | hour angle must be 180°. |
Answer» D. hour angle must be 180°. | |
13. |
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» D. none of these. | |
14. |
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. |
Answer» B. cos z = sec φ . cos δ | |
15. |
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» E. | |
16. |
When a star is between the pole and the horizon, the relationship between latitude (λ), zenith distance (z) and declination δ, is |
A. | θ = z + δ |
B. | θ = δ - z |
C. | θ = 180° - (z + δ) |
D. | θ = (z + δ) - 180°. |
Answer» D. θ = (z + δ) - 180°. | |
17. |
The true and mean suns occupy the same meridian at the same time on |
A. | April 15 |
B. | June 14 |
C. | September 1 |
D. | all the above. |
Answer» E. | |
18. |
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» D. cot A tan a | |
19. |
The main object of the astronomer to obtain |
A. | astronomical latitude |
B. | astronomical longitude |
C. | astronomical bearing |
D. | all of these. |
Answer» E. | |
20. |
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» C. co-declination of star | |
21. |
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» D. plumb points of stereo pair of photographs. | |
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» D. an arc of the great circle which passes through the place and is perpendicular to the equator. | |
23. |
The First Point of Aeries |
A. | is the point in the celestial sphere where zero meridian crosses the celestial equator |
B. | is usually denoted by the Greek letter γ |
C. | is located near the very conspicuous rectangle of stars in the constellations of Pegasus and Andromeda. |
D. | all the above. |
Answer» E. | |
24. |
The angular distance of a heavenly body from the equator, measured along its meridian, is called |
A. | declination |
B. | altitude |
C. | zenith distance |
D. | co-latitude. |
Answer» B. altitude | |
25. |
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» D. 40° | |
26. |
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» C. iso-centre | |
27. |
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» E. | |
28. |
Latitude of the observer's position is equal to altitude of |
A. | north pole |
B. | pole star |
C. | celestial pole |
D. | all the above. |
Answer» D. all the above. | |
29. |
The moon rotates round the earth once in every |
A. | 29 days |
B. | 29.35 days |
C. | 29.53 days |
D. | 30 days. |
Answer» C. 29.53 days | |
30. |
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. | isocentre |
C. | plumb point |
D. | perspective centre. |
Answer» C. plumb point | |
31. |
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» D. winter solstice. | |
32. |
At upper culmination, the pole star moves |
A. | eastward |
B. | westward |
C. | northward |
D. | southward. |
Answer» C. northward | |
33. |
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» D. main station. | |
34. |
A nautical mile is |
A. | one minute arc of the great circle passing through two points |
B. | one minute arc of the longitude |
C. | 6080 ft |
D. | all the above. |
Answer» E. | |
35. |
A star may culminate at zenith if its declination is |
A. | greater than the longitude of the place |
B. | less than the latitude of the place |
C. | equal to the latitude of the place |
D. | none of these. |
Answer» D. none of these. | |
36. |
The displacement of the pictured position of a point of h elevation on a vertical photograph taken with a camera of 30 cm focal length, from an altitude of 3000 m, is |
A. | 4.4 mm |
B. | 5.5 mm |
C. | 6.5 mm |
D. | 7.5 mm |
Answer» E. | |
37. |
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» E. | |
38. |
The latitude of the observer's position, is |
A. | elevation of the elevated pole |
B. | declination of the observer's zenith |
C. | angular distance along the observer's meridian between equator and the observer |
D. | all the above. |
Answer» E. | |
39. |
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» C. westward from the first point of Aeries | |
40. |
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» E. | |
41. |
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. |
Answer» D. 50 km. | |
42. |
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» E. | |
43. |
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» C. at west elongation | |
44. |
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» B. low oblique | |
45. |
Parallax bar measures |
A. | parallax |
B. | height |
C. | parallax difference |
D. | height difference. |
Answer» D. height difference. | |
46. |
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. |
Answer» E. | |
47. |
The parallax of a point on the photograph is due to |
A. | ground elevation |
B. | flying height |
C. | length of air base |
D. | all the above. |
Answer» E. | |
48. |
Polaris is usually observed for the determination of the latitude 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. at elongation | |
49. |
The scale of the photography taken from a height of 300 m, with a camera of focal length 15 cm, is |
A. | 1 : 10,000 |
B. | 1 : 15,000 |
C. | 1 : 20,000 |
D. | 1 : 30,000. |
Answer» D. 1 : 30,000. | |
50. |
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» E. | |