Civil Engineering  Advanced Surveying
Exercise :: Advanced Surveying  Section 1
36. 
The angle between the axis of earth and the vertical at the station of observation is called 
A. 
astronomical latitude  B. 
astronomical colatitude  C. 
codeclination of star  D. 
declination of star. 
Answer: Option B
Explanation:

37. 
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: Option C
Explanation:

38. 
The elevation of the star at elongation is obtained by 
A. 
sin α = sin φ cosec δ  B. 
sin α = sin φ sec δ  C. 
sin α = cos φ sec δ  D. 
sin α = cos φ cosec δ. 
Answer: Option A
Explanation:

39. 
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: Option D
Explanation:

40. 
The correction applied to the measured base of length L is 
A. 
 B. 
where w is the weight of tape/m  C. 
where h is height difference of end supports  D. 
Reduction to mean sea level =  E. 
all the above. 
Answer: Option E
Explanation:
