91. Two points A and B were 1000 m apart across a river. the following readings were taken with one level:
Level near station
Reading on
A
B
A
1.5
2.8
B
1.4
2.6
The error in the collimation adjustment of the level was + 0.002m per 100m. Determine the correction for refraction.
| Level near station | Reading on | |
|---|---|---|
| A | B | |
| A | 1.5 | 2.8 |
| B | 1.4 | 2.6 |
92. The line obtained on the earth's surface by intersection of an imaginery plane passing through the geographical north and sourth poles and the point of observation is . . . . . . . .
93. A is the compass station, bearing AE is 210° 30' and bearing AB is 132° 30'. Then angle A is equal to . . . . . . . .
94. The area enclosed between the boundary lines of the sketch by average ordinate rule . . . . . . . .
95. A triangle in triangulation survey is said to be well conditioned, when ti contain no angle smeller than . . . . . . . . degrees and no angle greater than . . . . . . . . degrees.
96. By levelling of prismatic compass, we mean . . . . . . . .
97. The distance measured parallel to the meridian called . . . . . . . .
98. The latitude of a traverse leg is obtained by multipling its length by . . . . . . . .
99. For setting up the theodolite, the legs of tripod should be spread, so that they make an angle of about . . . . . . . . degrees with the horizontal.
100. A tape of length 1 and weight 10 kg/m is suspended at its ends with a pull of p kg, the sag correction is . . . . . . . .
Read More Section(Mine Surveying)
Each Section contains maximum 100 MCQs question on Mine Surveying. To get more questions visit other sections.