Northern Coalfields Limited Surveyor Paper 2018

NCL Surveyor Paper – 2018

Pick up the correct statement from the following –
(a) Mistakes arise from inattention, in experience & carelessness
(b) Systematic errors persist and have regular effects in the survey performances
(c) Accidental errros occur inspite of every precaution is taken
(d) All of the above

Two contour lines, having the same elevation
(a) Can not cross each other
(b) Can cross each other
(c) Can not unite together
(d) Can unite together

Magnetic bearing of a survey line at any place
(a) Remains constant
(b) Charges systematically
(c) Varies difficulty in different month of the year
(d) is always grater than true bearing

Resovling power of a telescope depends on
(a) The diameter of the aperture
(b) The pupil aperture of the eye
(c) The diameter of the object glass
(d) All of the above

Check lines (A proof line) in chain surveying are essentially required
(a) To plot the chain line
(b) To plot of offsets
(c) To indicate the accuracy of the survey work
(d) To increase the out-turn

Horizontal distances obtained tacheometerically are corrected for
(a) Slope correction
(b) Temperature correction
(c) Refraction and curvature correction
(d) All of the above

The main principle of surveying is to work
(a) From part to the whole
(b) From whole to the part
(c) From higher level to the lower level
(d) From lower level to the higher level

Grid Lines are parallel to
(a) Magnetic meridian of the central point of the grid
(b) Line representing the central true meridian of the grid
(c) Geographical equator
(d) None of these

Surveys which are carried out to depict mountains, rivers, water boides, wooded areas and other cultural detials, are known as
(a) Cadastral Surveys
(b) City surveys
(c) Topographical Surveys
(d) Plane Surveys

Systematic errors are those errors
(a) Which can not be recognized
(b) Whose character is understood
(c) Whose effect are commutative and can be eliminated
(d) None of these