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Surveying
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Mechanical Engineering
Automobile Engineering
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Surveying
mcqs by everyone
Surveys which are carried out to provide a national grid of control for preparation of accurate maps of large areas, are known
geodetic surveys
topographical surveys.
plane surveys
geographical surveys
The properties of autogenous curve for automobiles are given by
true spiral
clothoid spiral.
Bernoulli's Lemniscate
cubic parabola
A sewer is laid from a manhole A to a manhole B, 250 m away along a gradient of 1 in125.
If the reduced level of the invert at A is205.
75 m and the height of the boning rod is 3 m, the reduced level of the sight rail at B, is
211.75 m
208.75 m
202.75 m
206.75 m
A clinometer is used for
correcting line of collimation
setting out right angles
measuring angle of slope
defining natural features.
Rankine's deflection angle in minutes is obtained by multiplying the length of the chord by
square of the degree of the curve
inverse of the degree of the curve
None of these.
degree of the curve
The horizontal angle between true meridian and magnetic meridian, is known
convergence.
dip
bearing
Magnetic declination
In tangential tacheometry, an ordinary level staff is used
vertical in all cases
leaning away from the instrument for inclined sights downwards
None of these.
leaning towards the instrument for inclined sights upward
Whole circle bearing of a line is preferred to a quadrantal bearing merely because
bearing is completely specified by an angle
Sign of the correction of magnetic declination is different in different quadrants
its trigonometrical values may be extracted from ordinary tables easily.
bearing is not completely specified by an angle
True meridians are generally preferred to magnetic meridians because
these converge to a point
these change due to change in time
None of these.
these remain constant.
The method of finding out the difference in elevation between two points for eliminating the effect of curvature and refraction, is
precise levelling
differential levelling
reciprocal levelling
flying levelling
If the rate of gain of radial acceleration is 0.3 m per sec3 and full centrifugal ratio isdeveloped.
On the curve the ratio of the length of the transition curve of same radius on road and railway, is
0.828.
2.828
1.828
3.828
The tangent to the liquid surface in a level tube, is parallel to the axis of the level tube at
either end of the bubble
the mid-point of the bubble
no where.
every point of the bubble
The ratio of the length of long chord and the tangent length of a circular curve of radius R deflecting through angle Δ, is
cos
2 sin
sin
TAN
2 cos .
Contour lines of different elevations can unite to form one line, only in the case of
a vertical cliff
a water shed line
a hill top.
a saddle
The staff reading at a distance of 80 m from a level with the bubble at its centre is 1.31 m. When the bubble is moved by 5 divisions out of the centre, the reading is 1.39 m. The angular value of the one division of the bubble, is
25.05
14.52 secs
NONE OF THESE
28.8 secs
41.25 secs
The theodolites used for making tacheometric observations by optical wedge system, are
not provided with stadia hairs at all
provided with stadia hairs in front of eye piece
fitted with a glass wedge in front of telescope.
fitted with a glass wedge inside the telescope
Hydrographic surveys deal with the mapping of
large water bodies
mountaineous region
canal system
movement of clouds.
heavenly bodies
In a closed traverse, sum of south latitudes exceeds the sum of north latitudes and the sum of east departures exceeds the sum of west departures, then, the closing line will lie in
south-west quadrant.
north east quadrant
north-west quadrant
south-east quadrant
The conventional sign shown in below figure represents a
aquaduct.
railway bridge
road bridge
canal bridge
The desired sensitivity of a bubble tube with 2 mm divisions is 30". The radius of the bubble tube should be
3.44 m
13.75 m
None of these.
1375 m
If S is the length of a subchord and R is the radius of simple curve, the angle of deflection between its tangent and sub-chord, in minutes, is equal to
573 R/S
1718.9 S/R.
1718.9 R/S
171.9 S/R
573 S/R
In levelling operation,
The second sight on any change point is a fore sight
The first sight on any change point is a back sight
The line commences with a back sight and closes with a foresight.
The line commences with a fore sight and closes with a back sight
Flint glass
All the above.
has roughly double refracting power than that of crown
has slightly the greater refracting power than crown glass
The bearings of the lines AB and BC are 146° 30' and 68° 30'. The included angle ABC is
102°
45°
78°
None of these.
The whole circle bearing of a line is 290°. Its reduced bearing is
N 70° W
N 20° W
N 20° E
S 70° E
The correction to be applied to each 30 metre chain length along θ° slope, is
The 10 mm markings on a levelling staff placed at 20 m are separated by
radian.
Radian
The construction of optical square is based, on the principle of optical
double reflection.
double refraction
Reflection
Refraction
The probable error of the adjusted bearing at the middle is
rn
rn.
Cross hairs in surveying telescopes, are fitted
in the objective glass
at the centre of the telescope
in front of the eye piece.
at the optical centre of the eye piece
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