Surveying
Which of the following errors cannot be eliminated by taking both face observations ?

None of these
error due to horizontal axis not being perpendicular to the vertical axis
index error i.e. error due to imperfect adjustment of the vertical circle vernier
error due to non-parallelism of the axis of telescope level and line of collimation

ANSWER DOWNLOAD EXAMIANS APP

Surveying
If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference toi) altitude bubble on index frameii) altitude bubble on index frame if it is to be used as a leveliii) altitude bubble on telescopeiv) altitude bubble on telescope if it is to be used as a levelThe correct answer is

both (ii) and (iii)
only (iii)
only (i)
both (i) and (iv)

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Dumpy level is most suitable when

many readings are to be taken from a single setting of the instrument
fly levelling is being done over long distance
All of these
the instrument is to be shifted frequently

ANSWER DOWNLOAD EXAMIANS APP