Direct method of contouring is cheaper than indirect method.
Intervisibility of points on a contour map cannot be ascertained.
Slope of a hill cannot be determined with the help of contours.
Correct answer: (A) Contour interval on any map is kept constant.
212. Sensitiveness of a level tube is designated by
Radius of level tube
Length of level tube
Length of bubble of level tube
None of the above
Correct answer: (A) Radius of level tube
213. Setting out a curve by two theodolite method, involves
Linear measurements only
Angular measurements only
Both linear and angular measurements
None of these
Correct answer: (B) Angular measurements only
214. Short offsets are measured with
An ordinary chain
An invar tape
A metallic tape
A steel tape
Correct answer: (A) An ordinary chain
215. Simpson's rule for calculating areas states that the area enclosed by a curvilinear figure divided into an even number of strips of equal width, is equal to
Half the width of a strip, multiplied by the sum of two extreme offsets, twice the sum of remaining odd offsets, and thrice the sum of the even offsets
One-third the width of a strip, multiplied by the sum of two extreme offsets, twice the sum of remaining odd offsets and four times the sum of the even offsets
One-third the width of a strip, multiplied by the sum of two extreme offsets, four times the sum of the remaining odd offsets, and twice the sum of the even offsets
One-sixth the width of a strip, multiplied by the sum of the two extreme offsets, twice the sum of remaining odd offsets and four times the sum of the even offsets
Correct answer: (B) One-third the width of a strip, multiplied by the sum of two extreme offsets, twice the sum of remaining odd offsets and four times the sum of the even offsets
216. Stadia techeometry was discovered by James Watt in the year.
1670
1770
1870
1900
Correct answer: (B) 1770
217. Staff readings on pegs x and y from X station are 1.755 m and 2.850 m, and from station Y on staff head at Y and X are 0.655 m and 1.560 m. If reduced level of X is 105.5 m, the reduced level of Y is
104.0 m
104.5 m
105.0 m
105.5 m
Correct answer: (B) 104.5 m
218. Straight, parallel and widely spaced contours represent
A steep surface
A flat surface
An inclined plane surface
Curved surface
Correct answer: (C) An inclined plane surface
219. Subtense bar is an instrument used for
Levelling
Measurement of horizontal distances in plane areas
Measurement of horizontal distances in undulated areas
Measurement of angles
Correct answer: (C) Measurement of horizontal distances in undulated areas
220. Subtense tacheometry is generally preferred to if ground is