MCQ Base Advanced Surveying Test - Set 11 - ObjectiveBooks
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# Practice Test: Question Set - 11

1. To obtain photographs of an area of 1000 m average elevation, on scale 1 : 30,000, with a camera of 30 cm focal length, the flying height is
(A) 4000 m
(B) 5000 m
(C) 6000 m
(D) 7000 m

2. The solar tidal force divided by lunar tidal force is
(A) 1/3
(B) 1/2
(C) 3/4
(D) 5/4

3. In a tropical year, the numbers of sidereal days are
(A) One less than mean solar days
(B) One more than mean solar days
(C) Equal to mean solar days
(D) None of these

4. 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

5. If α, HA and δ be the altitude, hour angle, azimuth and declination of a circumpolar star at its elongation, in latitude λ, the following relation holds good
(A) cos H = tan λ/tan δ
(B) sin α = sin λ/sin δ
(C) sin A = cos δ/cos λ
(D) All the above

6. Triangulation surveys are carried out for providing
(A) Planimetric control
(B) Height control
(C) Both planimetric and height control
(D) None of these

7. The angle between the plane of the equator and the plane of the ecliptic, is known as obliquity of the ecliptic and its value is
(A) 22° 30'
(B) 23° 27'
(C) 23° 30'
(D) 24° 0'

8. 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°

9. 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

10. 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

11. Spring tides are caused when
(A) Sun and moon are in line with earth
(B) Solar tidal force acts opposite to lunar tidal force
(C) Solar tidal force and lunar tidal force both coincide
(D) None of these

12. 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°

13. 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°

14. At upper culmination, the pole star moves
(A) Eastward
(B) Westward
(C) Northward
(D) Southward

15. 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

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