Civil Engineering :: Surveying
-
The ratio of the distances at which a stated length can be distinguished by the telescope and the human eye, respectively, is called
-
To orient a plane table at a point P roughly south of the mid-point of two inaccessible conical hill stations A and B in the plains, a point C is selected in line with AB and table is oriented at C by bringing ab in line with AB. A ray is then drawn towards P and at P the table is oriented by back ray method. The orientation so obtained, is
-
Which one of the following statements is correct ?
-
Pick up the correct statement from the following
-
The chaining on sloping ground is
-
Profile levelling is usually done for determining
-
The conventional sign shown in below figure represents a
-
Correction per chain length of 100 links along a slope having a rise of 1 unit in n horizontal units, is
Whatsapp
Facebook
|
A.
when the axes of rotation of the graduated circle and the verniers are not coincident, the instrument possesses eccentricity |
|
B.
the mean of the readings of the two verniers gives correct reading free from the eccentricity |
|
C.
one vernier may be used if the readings of two verniers differ by a constant |
|
D.
all the above. |
|
A.
1 second of arc corresponds to a displacement ratio of 1:206, 300 |
|
B.
1 degree of arc corresponds to a displacement ratio of 1:57 |
|
C.
the angular errors tend to propagate themselves along a traverse as the square root of the number of stations |
|
D.
the errors arising from the linear measures tend to be roughly proportional to the lengths of the lines |
|
E.
all the above. |