Surveying - Section 3 - Civil Engineering

Question No. 11.

in levelling the effect of refraction may be taken as _______of that due to curvature

A. 1/7

B. 1/2

C. 1/3

D. 1/5

Question No. 12.

In plane Table the intersection method is preferred when objects to be plotted are

A. at large distances

B. at small distances

C. large distance with high trees

D. at any distance

Question No. 8.

To minimise errors in fly levelling

A. the reduced level of the staff stations should be equal

B. the instrument should be at equal distance from staff stations

C. the summation of back sight and fore sight should be minimum

D. the legs of the dumpy level should be of same length

Question No. 14.

The sensivity of a bubble tube can be increased by

A. increasing the diameter of the tube

B. increasing the radius of curvature of the tube

C. increasing the length of the tube

D. none of the above

Question No. 15.

Reciprocal Levelling is done when

A. ground is uneven

B. ground is flat

C. balancing o sight is not possible

D. none of the above

Surveying – Section 3