91. Nautical mile is expressed as . . . . . . . .
92. The length of the sides of triangle are as follows: a = 6m, b = 8m, c = 10m then the angle c is equal . . . . . . . .
93. The lines passing through points at which the declination is zero are called
94. The branch of surveying in which both horizontal and vertical positives of a point are determined by making instrumental observations is known . . . . . . . .
95. The total length of curve from point of curve to point of tangency called . . . . . . . .
96. When the scale is 100mm to a meter, the RF is . . . . . . . .
97. 9 parts of the main scale division coinside with 10 parts of the vernier. The least count of vernier is . . . . . . . .
98. The survey used for exploration of mineral wealth is . . . . . . . .
99. The magnetic bearing of a line AB is 132° 45'. What is the true bearing, if magnetic declination is 5° 30' east.
100. O1, O2 and O3 are three consequetive offsets at common distance apart. The area of strip by Simpson's rule is . . . . . . . .
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