SSC JE Civil Engineering 23rd Jan 2018 Shift-2

Which of the following error is most likely to occur in the plane table surveying?

Which of the following is the expression for the additive constant, if f is the focal
length of objective and i is the stadia interval?

The staff reading taken on a staff held at a distance of 50 m from the instrument
with the bubble central is 1.465 m. When the bubble is moved 4 divisions
out of the centre, the staff reading is 1.472 m. What will be the radius of curvature (m) of the
bubble tube, if the length of one division is 2 mm?

Which of the following is the CORRECT ratio of refraction correction to curvature
correction?

Which of the following instrument is used for centering the theodolite in windy
conditions?

Which of the following test is used to make the line of sight perpendicular to the
horizontal axis?

Which of the following statement is TRUE for the linear reservoir?

A 45 cm diametre well penetrates an unconfined aquifer of 30 m thick. Under the
steady pumping rate for a long time, the drawdown’s at two observation
wells 10 m and 20 m from the pumping well are 5 m and 3.5 m respectively. What will be the
discharge (cubic metre), if the permeability of the aquifer is given as 20
m/day?

What will be the cant deficiency (cm), if maximum safe speed on a 5 Degree
curve of a broad gauge track is 110 km/h and average speed of train is 85
km/h?

What will be the shift of transition curve, if the length of transition curve is 80 m
and radius of the curve is 300 m?