Surveying
The circle in which a plane tangent to the earth's surface at the point of observation, intersects the celestial sphere, is called

Visible horizon
True horizon
Sensible horizon
Celestial horizon

ANSWER DOWNLOAD EXAMIANS APP

Surveying
For a line AB

none is correct
both (A) and (B) are correct
the forebearing of AB and back bearing of AB differ by 180°
the forebearing of AB and back bearing of BA differ by 180°

ANSWER DOWNLOAD EXAMIANS APP

Surveying
The rise and fall method

quicker and less tedious for large number of intermediate sights
provides a check on the reduction of intermediate point levels
is less accurate than height of instrument method
is not suitable for levelling with tilting levels

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Which of the following errors can be eliminated by taking mean of bot face observations ?

error due to eccentricity of verniers
error due to imperfect graduations
error due to line of collimation not being perpendicular to horizontal axis
error due to imperfect adjustment of plate levels

ANSWER DOWNLOAD EXAMIANS APP