### Surveying Set 5

This set of Surveying Multiple Choice Questions & Answers (MCQs) focuses on Surveying Set 5

Q1 | In chain surveying tie lines are primarily provided
• to check the accuracy of the survey
• to take offsets for detail survey
• to avoid long offsets from chain lines
• to increase the number of chain lines.
Q2 | If f1 and f2 are the distances from the optical center of a convex lens of focal length f to conjugate two points P1 and P2 respectively, the following relationship holds good
• f = f1 + f2
• f = (f1 + f2)
• 1/ f1 + 1/ f2
• none of these.
Q3 | Closed contours of decreasing values towards their center, represent
• a hill
• a depression
• a river bed.
Q4 | An imaginary line joining the points of equal elevation on the surface of the earth, represents
• contour surface
• contour line
• level line
Q5 | In chain surveying field work is limited to
• linear measurements only
• angular measurements only
• both linear and angular measurements
• all the above
Q6 | In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by
• adding 180°, if the given bearing is less than 180°
• subtracting 180°, if the given bearing, is more than 180°
• changing the cardinal points, i.e. substituting N for S and E for W and vice-versa
• none of these.
Q7 | Pick up the method of surveying in which field observations and plotting proceedsimultaneously from the following
• chain surveying
• compass surveying
• plan table surveying
• tacheometric surveying.
Q8 | While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is
• correctly focused
• not correctly focused
• said to have parallax
• free from parallax.
Q9 | True meridians are generally preferred to magnetic meridians because
• these converge to a point
• these change due to change in time
• these remain constant.
• None of these.
Q10 | The main principle of surveying is to work
• from part to the whole
• from whole to the part
• from higher level to the lower level
• from lower level to higher level.
Q11 | Geodetic surveying is undertaken
• for production of accurate maps of wide areas
• for developing the science of geodesy
• making use of most accurate instruments and methods of observation
• all the above.
Q12 | The best method of interpolation of contours, is by
• estimation
• graphical means
• computation
• all of these.
Q13 | The conventional sign shown in below figure represents a
• bridge carrying railway below road
• bridge carrying road below railway
• bridge carrying road and railway at the same level
• a level crossing.
Q14 | A relatively fixed point of known elevation above datum, is called
• bench mark
• datum point
• reduced level
• reference point.
Q15 | Cross hairs in surveying telescopes, are fitted
• in the objective glass
• at the center of the telescope
• at the optical center of the eye piece
• in front of the eye piece.
Q16 | On a diagonal scale, it is possible to read up to
• one dimension
• two dimensions
• three dimensions
• Four dimensions.
Q17 | Plotting of inaccessible points on a plane table, is done by
• intersection
• traversing
• none of these.
Q18 | Prismatic compass is considered more accurate than a surveyor's compass, because
• it is provided with a better magnetic needle
• it is provided with a sliding glass in the object vane
• its graduations are in whole circle bearings
• it is provided with a prism to facilitate reading of its graduated circle
Q19 | Removal of parallax, may be achieved by focussing
• the objective
• the eye-piece
• the objective and the eye-piece
• none of these.
Q20 | In an internal focusing telescope
• the objective is at a fixed distance from the diaphragm
• the focusing is done by the sliding of a divergent lens.
• the focusing divergent lens is situated at about the middle of the tube
• all the above.
Q21 | Imaginary line passing through points having equal magnetic declination is termed as
• isogon
• agonic line
• isoclinic line
• none of these
Q22 | While measuring a chain line between two stations A and B intervened by a raised ground
• vision gets obstructed
• chaining gets obstructed
• both vision and chaining get obstructed
• all the above.
Q23 | A clinometer is used for
• measuring angle of slope
• correcting line of collimation
• setting out right angles
• defining natural features.
Q24 | The whole circle bearing of a line is 290°. Its reduced bearing is
• N 20° E
• N 20° W
• N 70° W
• S 70° E
Q25 | The reduced bearing of a line is N 87° W. Its whole circle bearing is
• 87°
• 273°
• 93°