Every angle is less than two right angles
Sum of the three angles is equal to two right angles
Sum of the three angles less than six right angles and greater than two right angles
Sum of any two sides is greater than the third
B. Sum of the three angles is equal to two right angles
1°
2°
3°
4°
58 mm
60 mm
62 mm
64 mm
cos δ/cos λ
cos (90° - δ)/cos (90° - λ)
sin (90° - δ)/sin (90° - λ)
tan (90° + δ)/tan (90° + λ)
Equator
Celestial equator
Ecliptic
None of these
1600
1615
1630
1650
2 mm
4 mm
6 mm
10 mm
f/H
f/(H + h)
f/(H - h)
(H - h)/f
Parallel lines do not appear parallel in central projection
The two sides of a road meet at the vanishing point
The lines parallel to the negative plane are projected as parallel lines
All the above
Eastward
Westward
Northward
Southward
Always follow some definite mathematical law
Can be removed by applying corrections to the observed values
Are also known as cumulative errors
All the above
sin a cos A
cos a sin A
tan a cot A
cot A tan a
S - 90°
S - 180°
S - 270°
S - 360°
Is prepared, by graphical method
Is suitable for large areas with less control
Is rapid and accurate
All the above
At culmination
At elongation
Neither at culmination nor at elongation
Either at culmination or at elongation
5100 nautical miles
5700 nautical miles
120 nautical miles
500 nautical miles
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
Two angle equations and two side equations
One angle equation and three side equations
Three angle equations and one side equation
None of these
Mean sun
True sun
Vernal equinox
All the above
The principal point coincides with plumb point on a true vertical photograph
The top of a hill appears on a truly vertical photograph at greater distance than its bottom from the principal point
The top of a hill is represented on a vertical photograph at larger scale than the area of a nearby valley
All the above
Horizon and equator
Zenith and pole
Equator and zenith
Pole and horizon
At east elongation
At upper culmination
At west elongation
At lower culmination
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
Once
Twice
Thrice
Four times
1000 km
800 km
600 km
500 km
Astronomical latitude
Astronomical longitude
Astronomical bearing
All of these
Eastward
Westward
Northward
Southward
Observation equation
Conditional equation
Normal equation
None of these
Aerial photographs may be either vertical or oblique
Vertical photographs are taken with the axis of camera pointing vertically downward
Vertical photographs are used for most accurate maps
All the above
Control points for surveys of large areas
Control points for photogrammetric surveys
Engineering works, i.e. terminal points of long tunnels, bridge abutments, etc.
All the above
Tangents of two adjacent parts
Sines of two adjacent parts
Cosines of two adjacent parts
Both (a) and (b) above