Civil Engineering - UPSC Civil Service Exam Questions - Discussion


The two-peg test in the adjustment of a dumpy level employs the principle that

[A]. equal lengths at back sight and fore sight do not affect the difference in level.
[B]. reciprocal levelling eliminates errors of non-parallel instrument and collimation axes.
[C]. two readings from the same station will minimize errors in bubble tube axis.
[D]. correction is made for verticle axis at one peg and for horizontal axis at the other peg.

Answer: Option A


No answer description available for this question.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.