Practice Test: Question Set - 12
1. Benchmark is established by
- (A) Hypsometry
- (B) Barometric
levelling
- (C) Spirit
levelling
- (D) Trigonometrical
levelling
2. If a tacheometer is fitted with an anal-latic lens
- (A) Additive
constant is 100, multiplying constant is zero
- (B) Multiplying
constant is 100, additive constant is zero
- (C) Both
multiplying and additive constants are 100
- (D) Both
multiplying and additive constants are 50
3. Short offsets are measured with
- (A) An ordinary
chain
- (B) An invar
tape
- (C) A metallic
tape
- (D) A steel tape
4. The representation of general topography of a very flat terrain is possible only
- (A) By drawing
contours at large interval
- (B) By drawing
contours at small interval
- (C) By giving
spot levels at large interval
- (D) By giving
spot levels to salient features at close interval
5. True meridian of different places
- (A) Converge
from the South Pole to the North Pole
- (B) Converge
from the North Pole to the South Pole
- (C) Converge
from the equator to the poles
- (D) Run parallel
to each other
6. The angle between the prolongation of the preceding line and the forward line of a traverse is called
- (A) Deflection
angle
- (B) Included
angle
- (C) Direct angle
- (D) None of the
above
7. To set out a parallel from a given inaccessible point to a given line AB, the following observations are made:
Distance AB and angle PAM = a and
angle PBA = b are measured where M is a point
on the line BA produced. The perpendicular to the desired
parallel line from A and B are:
- (A) AB/(cot
b - cot a)
- (B) AB/(cos
b - cos a)
- (C) AB/(cot
a - cot b)
- (D) AB/(cot
a - cos b)
8. Pick up the correct statement from the following:
- (A) A refracting
telescope consists optically of two lenses
- (B) The
principal axes of both the lenses coincide the optical axis of the telescope
- (C) The lens
nearer the object to be viewed is convex and is called objective
- (D) All the
above
9. In case of a direct vernier scale
- (A) Graduations
increase in opposite direction in which graduations of the main scale increase
- (B) Smallest
division is longer than smallest division of the main scale
- (C) Graduations
increase in the same direction in which graduations of the main scale increase
- (D) None of
these
10. The operation of making the algebraic sum of latitudes and departures of a closed traverse, each equal to zero, is known
- (A) Balancing
the sights
- (B) Balancing
the departures
- (C) Balancing
the latitudes
- (D) Balancing
the traverse
11. Dumpy level is most suitable when
- (A) The
instrument is to be shifted frequently
- (B) Fly
levelling is being done over long distance
- (C) Many
readings are to be taken from a single setting of the instrument
- (D) All of the
above
12. Magnetic declination at any place
- (A) Remains
constant
- (B) Does not
remain constant
- (C) Fluctuates
- (D) Changes
abruptly
13. If the length of a chain line along a slope of θ° is l, the required slope correction is
- (A) 2l cos2 θ/2
- (B) 2l sin2 θ/2
- (C) l tan2 θ/2
- (D) l cos2 θ/2
14. The combined effect of curvature and refraction over a distance ‘L’ kilometres is
- (A) 67.2 L2 mm
- (B) 76.3 L2 mm
- (C) 64.5 L2 mm
- (D) None of
these
15. The systematic errors which persist and have regular effects in the performance of a survey operation are due to
- (A) Carelessness
- (B) Faulty
instrument
- (C) Inattention
- (D) None
of these