SSC JE Civil Engineering 24th Jan 2018 Shift-1

The scale in which three successive dimensions can be measured at a time is called _____.

Which one is the CORRECT option for the cumulative errors?
1. It decreases with an increase in measurement.
2. It is directly proportional to the length of the lin e.
3. It may be positive or negative.
4. It is inversely proportional to th e length of the line.

The fore bearing of a line is30 degree,. Calculate the back bearing of a line (in degree).

In which of the following plane, the telescope of the theodolite is turned in order to swing?

Relative error of the closer is the ratio of _____.

Determine the number of divisions required on the vernier scale, if it is combined with the main scale of least count 0.5 mm. The least count of the combination required is 0.05 mm for the direct vernier.

The height of any point with respect to mean sea level is called ______.

Calculate the reduced level (m) of a point A, if the staff readings at the point A and benchmark are 2.8 m and 2.5 m respectively. The reduced level of the benchmark is 100m.

Calculate the horizontal distance between the staff and instrument, if the staff readings are 1.4 m and 2.9 m, which corresponds to lower and the upper horizontal lines of cross hair. The lens of the telescope of the tachometer is of anallactic lens.

The volume of an embankment having a total length of L and cross section areas of four sections at an interval of H are $$A_1, A_2, A_3, A_4$$ using the trapezoidal method is