Imp questions on surveying for civil engineering aspirants Part 01

 1) Hydro graphic surveys deal with the mapping of

A. large water bodies

B. heavenly bodies

C. mountaineous region

D. canal system

E. movement of clouds.

Answer: A

2) The intercept of a staff

A. is maximum if the staff is held truly normal to the line of sight.

B. is minimum if the staff is held truly normal to the line of sight.

C. decreases if the staff is tilted away from normal

D. increases if the staff is tilted towards normal.

Answer:  B

3) Pick up the correct statement from the following :

A. the eyepiece plays no part in defining the line of sight

B. the diaphragm plays no part in defining the line of sight

C. the optical centre of the objective plays no part in defining the line of sight

D. none of these.


4) An ideal vertical curve to join two gradients, is

A. circular

B. parabolic

C. elliptical

D. hyperbolic

E. none of these.

Answer: B

5) The radius of curvature of the arc of the bubble tube is generally kept

A. 10 m

B. 25 m

C. 50 m

D. 100 m


6) If S is the length of a sub chord and R is the radius of simple curve, the angle of deflection between its tangent and sub-chord, in minutes, is equal to

A. 573 S/R

B. 573 R/S

C. 171.9 S/R

D. 1718.9 R/S

E. 1718.9 S/R.


7) The real image of an object formed by the objective, must lie

A. in the plane of cross hairs

B. at the centre of the telescope

C. at the optical centre of the eye-piece

D. anywhere inside the telescope.


8) In chain surveying tie lines are primarily provided

A. to check the accuracy of the survey

B. to take offsets for detail survey

C. to avoid long offsets from chain lines

D. to increase the number of chain lines.


9) Pick up the correct statement from the following :

A. the tangent screw enables to give small movement under conditions of smooth and positive control

B. standing on the tripod is the leveling head or tribe arch

C. the leveling screws are used to tilt the instrument so that its rotation axis is truly vertical

D. all the above.


10) The accuracy of measurement in chain surveying, does not depend upon

A. length of the offset

B. scale of the plotting

C. importance of the features

D. general layout of the chain lines.


11) Closed contours of decreasing values towards their center, represent

A. a hill

B. a depression

C. a saddle or pass

D. a river bed.


12) Diopter is the power of a lens having a focal length of

A. 25 cm

B. 50 cm

C. 75 cm

D. 100 cm

E. 125 cm

Answer: D

13) An imaginary line joining the points of equal elevation on the surface of the earth, represents

A. contour surface

B. contour gradient

C. contour line

D. level line

E. none of these.


14) The 'fix' of a plane table station with three known points, is bad if the plane table station lies

A. in the great triangle

B. outside the great triangle

C. on the circumference of the circumscribing circle

D. none of these.

Answer: C

15) In chain surveying field work is limited to

A. linear measurements only

B. angular measurements only

C. both linear and angular measurements

D. all the above.

Answer: A

16) Two concave lenses of 60 cm focal length are cemented on either side of a convex lens of 15 cm focal length. The focal length of the combination is

A. 10 cm

B. 20 cm

C. 30 cm

D. 40 cm

Answer: C

17) One of the thermometric constants is additive, the other constant, is

A. subtractive constant

B. multiplying constant

C. dividing constant

D. indicative constant.


18) The limiting length of an offset does not depend upon

A. accuracy of the work

B. method of setting out perpendiculars

C. scale of plotting

D. indefinite features to be surveyed.


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