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1.0.0
সার্ভেয়িং Questions
1. The angle between the back tangent and forward tangent of a curve is known as-
deflection angle
central angle
angle of intersection
none of these
2. The additive constant for the tacheometer is-
f/i
i/f
f/d
f+d
3. When several contours coincide, it indicates-
a vertical cliff
a valley
a ridge
an overhanging cliff
4. The vertical distance between any two consecutive contours is called-
vertical equivalent
horizontal equivalent
contour interval
contour gradient
5. A line normal to the plumb line at all points is known as-
horizontal line
vertical line
level line
line of collimation
6. The spacing of cross-sections in a hilly country is usually-
5m
10m
15m
20m
7. The total length of the curve is equal to [R is radius of curve & ◊ is deflection angle)-
πR∅
πR∅/90
πR∅/180
πR∅/360
8. The value of additive constant for the tacheometer varies from-
0 to 15cm
15 to 30cm
30 to 60cm
45 to 60cm
9. A back sight indicates the of the instrument.
shifting
setting up
height
none of these
10. The length of peg interval for flat curves is-
15m
20m
25m
30m
11. The reduced level of the plane of ৫ collimation is-height of instrument.
equal to
less than
greater than
none of these
12. The line joning the points having the same elevation above the datum surface, is called a-
contour surface
contour line
contour interval
contour gradient
Contour Line: An imaginary live joining the points of the same elevation above the datum surface. Contour Surface: An imaginary line at which every point is located at the same elevation above the datum. Contour Interval: The difference in elevation between successive contour lines on a map. Contour Gradient: The ratio of the vertical height to a specified horizontal distance.
13. A staff reading taken on a benchmark or a point of known elevation is called-
F.S. reading
B.S. reading
intermediate sight
any one of these
14. Collimation method is used in leveling.
profile
differential
check
both (a) and (b)
15. In leveling, the correction for curvature (in metres) is equal (D is km)-
0.00785d2
0.0785d2
0.0112d2
0.0673d2
16. The spacing of cross-sections in a hilly country is usually-
15m
20m
25m
30m
17. In leveling, the correction for combined curvature and refraction (in metre) is equal to-
0.00785d2
0.0785d2
0.0112d2
0.0673d2
18. Rise and fall method is used in-leveling.
profile
differential
check
none of these
19. The reduced level of a point on the ground is called-
spot level
spot height
either (a) or (b)
none of these
20. A surface which is normal to the direction of gravity at all points, as indicated by a plumb line, is known as-
datum surface
level surface
horizontal surface
vertical surface