Practice Test: Question Set - 05
1. For a tachometer the additive and multiplying constants are respectively
- (A) 0 and 100
- (B) 100 and 0
- (C) 0 and 0
- (D) 100 and 100
2. Correct distance obtained by an erroneous chain is:
- (A) (Erroneous
chain length/Correct chain length) × Observed distance
- (B) (Correct
chain length/Erroneous chain length) × Observed distance
- (C) (Correct
chain length/Observed distance) × Erroneous chain length
- (D) None of
these
3. An imaginary line lying throughout on the surface of the earth and preserving a constant inclination to the horizontal, is called
- (A) Contour line
- (B) Contour
gradient
- (C) Level line
- (D) Line of
gentle scope
4. The constant vertical distance between two adjacent contours, is called
- (A) Horizontal
interval
- (B) Horizontal
equivalent
- (C) Vertical
equivalent
- (D) Contour
interval
5. If a 30 m chain diverges through a perpendicular distance d from its correct alignment, the error in length, is
- (A) (d2/60) m
- (B) (d2/30) m
- (C) (d2/40) m
- (D) (d/30) m
6. The sensitivity of a bubble tube can be increased by
- (A) Increasing
the diameter of the tube
- (B) Decreasing
the length of bubble
- (C) Increasing
the viscosity of liquid
- (D) Decreasing
the radius of curvature of tube
7. A standard steel tape of length 30 m and cross-section 15 × 1.0 mm was standardised at 25°C and at 30 kg pull. While measuring a base line at the same temperature, the pull applied was 40 kg. If the modulus of elasticity of steel tape is 2.2 × 106 kg/cm2, the correction to be applied is
- (A) - 0.000909 m
- (B) + 0.0909 m
- (C) 0.000909 m
- (D) None of
these
8. Pick up the correct statement from the following:
- (A) It is
difficult to eliminate an error completely at first trial
- (B) Instability
of the instrument makes it almost impossible to adjust it satisfactorily
- (C) Adjustment
screws must be left bearing firmly but should never be forced
- (D) All the
above
9. The properties of autogenous curve for automobiles are given by
- (A) True spiral
- (B) Cubic
parabola
- (C) Bernoulli's
Lemniscate
- (D) Clothoid
spiral
10. In chain surveying field work is limited to
- (A) Linear
measurements only
- (B) Angular
measurements only
- (C) Both linear
and angular measurements
- (D) All the
above
11. The difference of levels between two stations A and B is to be determined. For best results, the instrument station should be
- (A) Equidistant
from A and B
- (B) Closer to
the higher station
- (C) Closer to
the lower station
- (D) As far as
possible from the line AB
12. The curve composed of two arcs of different radii having their centres on the opposite side of the curve, is known
- (A) A simple
curve
- (B) A compound
curve
- (C) A reverse
curve
- (D) A vertical
curve
13. Pick up the correct statement from the following:
- (A) An
observation or the resulting reading with the level on a levelling staff is
called sight
- (B) A back sight
is the first sight taken after setting up the instrument in any position
- (C) The first
sight on each change point is a fore sight
- (D) All the above
14. The angle of intersection of a curve is the angle between
- (A) Back
tangent and forward tangent
- (B) Prolongation
of back tangent and forward tangent
- (C) Forward
tangent and long chord
- (D) Back
tangent and long chord
15. If ‘L’ is the perimeter of a closed traverse, ΔD is the closing error in departure, the correction for the departure of a traverse side of length ‘l’, according to Bowditch rule, is
- (A) ΔD ×
L/l
- (B) ΔD ×
l2/L
- (C) L ×
l/ΔD
- (D) ΔD ×
l/L
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