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Always negative
Size of a theodolite is specified by
The diameter of lower plate
Select the incorrect statement.
The true meridians at different places are parallel to each other
T
The distance between two buildings is 400 meters. On the map that same distance is 8 cm. What is the scale of the map?
1:5000
The distance between two buildings is 40 meters. On the map that same distance is 4 cm. What is the scale of the map?
1:1000
The largest scale of the following is
1:24000
The reduced level of a floor is 99.995 m, the staff reading on the floor is 1. 505 m. If the inverted staff reading against the roof is 1.795 m, the floor level below the slab, is
M
The equator can also be called a:
Parallel of Latitude and Great Circle
The latitude (λ) of a place and the altitude (α) of the pole are related by
λ = α
The method generally preferred to for contouring an undulating area, is
Tacheometrical surveying
The sensitiveness of a level tube decreases if
Both viscosity and surface tension are increased.
The reduced bearing of a line is N 45° W. Its whole circle bearing is
315°
The reduced bearing of a line is S 87° W. Its whole circle bearing is
267°
The reduced bearing of a line is S 87° E. Its whole circle bearing is
93°
The reduced bearing of a line is N 87° E. Its whole circle bearing is
87°
The reduced bearing of a line is N 53° W. Its whole circle bearing is
307°
The largest scale of the following is
1:14000
The smallest scale of the following is
1:600000
Transition curves are introduced at either end of a circular curve, to obtain
Gradual increase of super-elevation from zero at the tangent point to the specified amount at the junction of the transition curve with main curve
The bearings of two traverse legs AB and BC are N52° 45′ E and N34° 30′ E respectively. The deflection angle is
L
The largest scale of the following is
1:1000
Total latitude of a point is negative if it lies
South of the reference parallel
The angles are adjustable in optical square but they are fixed in prism.
A building is
The intercept of a staff
Is minimum if the staff is held truly normal to the line of sight
The accuracy of measurement in chain surveying, does not depend upon
General layout of the chain lines
The limiting length of an offset does not depend upon
Indefinite features to be surveyed.
True meridians are generally preferred to magnetic meridians because
These remain constant.
The most reliable method of plotting a theodolite traverse, is
By independent co-ordinates of each station
The difference of level between a point below the plane of sight and one above, is the sum of two staff readings and an error would be produced equal to
Twice the distance between the zero of graduation and the foot of the staff
The bearings of the lines AB and BC are 146° 30' and 68° 30'. The included angle ABC is
102°
The slope correction for a length of 30 m along a gradient of 1 in 20, is
Cm
The main principle of surveying is to work
From whole to the part
The probable error of the adjusted bearing at the middle is
R корень из n
The telescope of theodolite said to be inverted if its
Vertical circle is to its right and the bubble of the telescope is down
The horizontal angle between true meridian and magnetic meridian, is known
Magnetic declination
The method of finding out the difference in elevation between two points for eliminating the effect of curvature and refraction, is
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| Keeping the instrument height as 1.5 m, length of staff 4 m, the slope of the ground as 1 in 10, the sight on the down-slope, must be less than 25 m | | | Reciprocal levelling |