Image
1.0.0
MCQ
181. When several contours coincide, it indicates-
a vertical cliff
a valley
a ridge
an overhanging cliff
182. The spacing of cross-sections in a hilly country is usually-
5m
10m
15m
20m
183. Rise and fall method is used in-leveling.
profile
differential
check
none of these
184. The reduced level of a point on the ground is called-
spot level
spot height
either (a) or (b)
none of these
185. The reduced level of the plane of ৫ collimation is-height of instrument.
equal to
less than
greater than
none of these
186. বিষুব রেখার সম্মুখ বিয়ারিং ও পশ্চাৎ বিয়ারিং-এর পার্থক্য --
0°
90°
180°
360°
Explained: শুধু বিষুব নয় যে কোন রেখার সম্মুখ ও পশ্চাৎ বিয়ারিং ফেজ পার্থক্য ১৮০°।
187. A back sight indicates the of the instrument.
shifting
setting up
height
none of these
188. কোন বাঁকে সুপার এলিভেশন প্রয়োগ করা কষ্টকর--
যৌগিক
বিপরিত
সরল
সংযুক্ত
Explained: বিপরীত বাঁকে সুপার এলিভেশন প্রয়োগ করা কষ্টকর।
189. 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.
190. The total length of the curve is equal to [R is radius of curve & ◊ is deflection angle)-
πR∅
πR∅/90
πR∅/180
πR∅/360
191. The additive constant for the tacheometer is-
f/i
i/f
f/d
f+d
192. The value of additive constant for the tacheometer varies from-
0 to 15cm
15 to 30cm
30 to 60cm
45 to 60cm
193. In leveling, the correction for combined curvature and refraction (in metre) is equal to-
0.00785d2
0.0785d2
0.0112d2
0.0673d2
194. The length of peg interval for flat curves is-
15m
20m
25m
30m
195. Collimation method is used in leveling.
profile
differential
check
both (a) and (b)
196. In leveling, the correction for curvature (in metres) is equal (D is km)-
0.00785d2
0.0785d2
0.0112d2
0.0673d2
197. 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
198. The spacing of cross-sections in a hilly country is usually-
15m
20m
25m
30m
199. The vertical distance between any two consecutive contours is called-
vertical equivalent
horizontal equivalent
contour interval
contour gradient
200. 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