SSC JE Civil Engineering 25th Jan 2018 Shift-2
For the following questions answer them individually
The vernier that is calibrated in the direction opposite to the main scale is called
_____.
Which of the following instrument is used for measurement of sighting objects in
a plane table survey?
For no error in the magnitude, the difference (degree) in the magnitude of the
fore bearing and back bearing of any line is _____.
What is the number of fore bearing and back bearing for an open traverse of n
numbers of station?
The difference between the last reduced level and the first reduced level is equal
to _____.
The correction of the refraction for a distance ‘D’ between the staff and
instrument is _____.
Calculate the horizontal distance of a point from the instrument, if the staff
intercept is 2.5 m. The micrometer reading of the drum of the diaphragm is 3.2
and the micrometer screw has 100 threads in 1 cm. The focal length of the objective glass is
200 mm and the distance of the instrument axis from the centre of the
object glass is 180 mm.
