1°
2°
3°
4°
C. 3°
1600
1615
1630
1650
Mean sun
First point of Aries
First point of Libra
The polar star
Normal to base line
Parallel to base line
Both (a) and (b)
Neither (a) nor (b)
One degree of longitude has greatest value at the equator
One degree of longitude has greatest value at the poles
One degree of longitude has the same value everywhere
One degree of latitude decreases from the equator to the poles
One less than mean solar days
One more than mean solar days
Equal to mean solar days
None of these
Latitudes north of the equator are taken as positive
Latitudes south of the equator are taken as negative
Longitudes east of Greenwich are taken as negative
Longitudes west of Greenwich are taken as positive
Centre of the celestial sphere is taken as the position of the observer
Centre of the celestial sphere is taken as the centre of the earth
Stars move and maintain their relative positions
All the above
Equator
Horizon
Pole
None of these
Rotate round the North Pole
Rotate round the celestial pole
Remain always above the horizon
Are seldom seen near the pole star
At culmination
At elongation
Neither at culmination nor at elongation
Either at culmination or at elongation
Sun and moon are in line with earth
Solar tidal force acts opposite to lunar tidal force
Solar tidal force and lunar tidal force both coincide
None of these
Satellite station
Subsidiary station
Pivot station
Main station
At east elongation
At upper culmination
At west elongation
At lower culmination
50 %
60 %
70 %
75 %
80°
70°
60°
50°
Altitude and azimuth system
Declination and hour angle system
Declination and right ascension system
Declination and altitude system
f sin θ
f cos θ
f tan θ
f sec θ
0.1 mm
0.5 mm
1.00 mm
1.1 mm
If the applied tension to the tape is more than the standard, the tension correction is positive
If the applied tension to the tape is less than the standard, the tension correction is negative
If the temperature during measurement is greater than the standard temperature, the temperature correction is positive
All the above
The length of the air base is increased
The scale of the model is altered
y-parallax is not affected
All the above
1 minute of latitude
1 minute of longitude
1 degree of latitude
1 degree of longitude
Reduction to mean sea level
Correction for horizontal alignment
Correction for slope
All the above
1 cm
2 cm
3 cm
4 cm
Parallel projection
Orthogonal projection
Central projection
None of these
Eastward
Westward
Northward
Southward
The star's movement is apparent due to the actual steady rotation of the earth about its axis
The stars move round in circular concentrated parts
The centre of the circular paths of stars is the celestial pole
All the above
When the star momentarily moves vertically
When the angle at the star of the spherical triangle is 90°
When the star's declination is greater than the observer's latitude
All the above
Plane surveying
Geodetic surveying
Star observations
Planet observations
Equator
Celestial equator
Ecliptic
None of these
Equator
Terrestrial equator
0° latitude
All the above