Surveying Set 5 MCQs

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 saddle or pass

a river bed.

Q4 | An imaginary line joining the points of equal elevation on the surface of the earth, represents

contour surface

contour gradient

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

radiation

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°

3°