500 Best Surveying MCQ
Q121). The error which is not completely eliminated in reciprocal levelling, is
a).error due to curvature
b).error due to refraction
c).error due to non-adjustment of the line of collimation
d).error due to non-adjustment of bubble tube
Correct Answer:
error due to refraction
Explanation:
Q122). The line joining the points having the same elevation above the datum surface, is called
a).contour surface
b).contour line
c).contour interval
d).contour gradient
Correct Answer:
contour line
Explanation:
Q123). The contour interval depends upon the
a).nature of the ground
b).scale of map
c).purpose and extent of survey
d).all of these
Correct Answer:
all of these
Explanation:
Q124). The vertical distance between any two consecutive contours is called
a).vertical equivalent
b).horizontal equivalent
c).contour interval
d).contour gradient
Correct Answer:
contour interval
Explanation:
Q125). The horizontal distance between any two consecutive contours is called
a).vertical equivalent
b).horizontal equivalent
c).contour interval
d).contour gradient
Correct Answer:
horizontal equivalent
Explanation:
Q126). The contour lines can cross one another on map only in the case of
a).vertical cliff
b).a valley
c).a ridge
d).an overhanging cliff
Correct Answer:
an overhanging cliff
Explanation:
Q127). When several contours coincide, it indicates
a).vertical cliff
b).a valley
c).a ridge
d).a saddle
Correct Answer:
vertical cliff
Explanation:
Q128). Contour line cross ridge or valley lines at
a).30°
b).45°
c).60°
d).90°
Correct Answer:
90°
Explanation: