Practice Test: Question Set - 13
1. The instrument used for accurate centering in plane table survey is
- (A) Spirit
level
- (B) Alidade
- (C) Plumbing
fork
- (D) Trough
compass
2. Accuracy of elevation of various points obtained from contour map is limited to
- (A) 1/2 of
the contour interval
- (B) 1/4th
of the contour interval
- (C) 1/3rd
of the contour interval
- (D) 1/5th
of the contour interval
3. The curvature of the earth's surface, is taken into account only if the extent of survey is more than
- (A) 100 sq km
- (B) 160 sq km
- (C) 200
sq km
- (D) 260 sq km
4. The theodolites used for making tacheometric observations by optical wedge system, are
- (A) Provided
with stadia hairs in front of eye piece
- (B) Not provided
with stadia hairs at all
- (C) Fitted with
a glass wedge inside the telescope
- (D) Fitted with
a glass wedge in front of telescope
5. When the bubble of the level tube of a level, remains central
- (A) Line of
sight is horizontal
- (B) Axis of the
telescope is horizontal
- (C) Line of
collimation is horizontal
- (D) Geometrical
axis of the telescope is horizontal
6. An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as
- (A) Contour line
- (B) Horizontal
equivalent
- (C) Contour
interval
- (D) Contour
gradient
7. Accurate measurement of deflection angles with a transit not properly adjusted may be made by
- (A) Setting the
Vernier A at zero at back station and then plunging the telescope
- (B) Setting
the Vernier A at zero at back station and turning the instrument to the forward
station
- (C) Taking
two back sights one with the telescope normal and the other with telescope
inverted
- (D) None of
these
8. Pick up the correct statement from the following:
- (A) The
framework which consists of a series of connected lines, the lengths and
directions of which are found from measurements, is called a traverse
- (B) The
system of a series of lines which forms a circuit which ends at the starting
point, is called a closed traverse
- (C) The traverse
that starts from a point already fixed in some survey system and ends on
another such point, is called a controlled traverse
- (D) All the
above
9. 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
- (A) 3.290 m
- (B) 3.300 m
- (C) 3.275 m
- (D) 2.790 m
10. Probable systematic error in precise levelling as recommended by International Geodetic Association should not exceed (where ‘k’ is in kilometers.)
- (A) ± 0.1 √k mm
- (B) ± 0.2 √k mm
- (C) ± 0.1 √k
- (D) 0.2 √k mm
11. The resection by two point problem as compared to three point problem
- (A) Gives more
accurate problem
- (B) Takes less
time
- (C) Requires
more labour
- (D) None of the
above
12. The co-ordinate of a point measured perpendicular to the parallel, is called
- (A) Total
latitude
- (B) Meridian
distance
- (C) Total
departure
- (D) Consecutive
co-ordinate
13. The bearing of C from A is N 30° E and from B, 50 metres east of A, is N 60° W. The departure of C from A is
- (A) 50 m
- (B) 50 √3 m
- (C) 25 √3 m
- (D) 25 m
14. If h1 and h2 are the differences in level between ground and the formation levels, m is the slope of the sloping sides. D is the distance between the cross sections then, Prismoidal correction for a level section is
- (A) D/2m(h1 - h2)
- (B) D/3m(h1 - h2)
- (C) D/6m(h1 - h2)2
- (D) D/6m(h1 - h2)3
15. Pick up the correct statement from the following:
- (A) The eyepiece
plays no part in defining the line of sight
- (B) The
diaphragm plays no part in defining the line of sight
- (C) The
optical centre of the objective plays no part in defining the line of sight
- (D) None of
these
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