Surveying
The adjustment of horizontal cross hair is required particularly when the instrument is used for

prolonging a straight line
leveling
All of these
measurement of horizontal angles

ANSWER DOWNLOAD EXAMIANS APP

Surveying
In the prismatic compass

the magnetic needle moves with the box
the graduated circle is fixed to the box and the magnetic needle always remains in the N-S direction
the magnetic needle and graduated circle do not move with the box
the line of the sight does not move with the box

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Homologous points are

Nodal points of the camera lens
Corresponding points on the ground and photograph
Plumb points of stereo pair of photographs
Opposite corners of a photograph

ANSWER DOWNLOAD EXAMIANS APP