A back sight on a bench mark of RL 100m on the floor of tunnel is 3.25m. The inverse staff reading on a roof station of the tunnel is 1.25m. The RL of the roof station is . . . . . . . .
A. 101 - 102
B. 104 - 105
C. 108 - 110
D. None
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A concave lens provided in telescope between the object lens and eye piece to eliminate the additive constant (f + d) from the Tachernetric distance equation is known as an . . . . . . . . lens.
A. Concave convex
B. Convex
C. Bifocal
D. Annallatic
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The BB of line AB is 195° and the angle BAC is 150° measured in clockwise direction. The BB of line AC is . . . . . . . .
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ABCDA is a closed traverse and the bearings of lines are . . . . . . . .
AB = 124° 30', BC = 68° 15', CD = 310° 30', DA = 200° 15'. The sum of the interial angles is . . . . . . . .
A. 540°
B. 540° 30'
C. 450°
D. 360°
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The smallest distance on the paper which can be distinguished in plotting is
A. 1mm
B. 0.1mm
C. 0.2mm
D. 0.25mm
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The representative fraction of scale 1mm = 0.05m is equal to . . . . . . . .
A. 0.5 1
B. 5 1
C. 50 1
D. 500 1
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A traverse fault is one whose general direction is
A. Parallel to dip of beds
B. Parellel to strike of beds
C. Does not depend on the dip and strike
D. None
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The levelling instrument not provided with spirit level.
A. Dumpy level
B. Automatic level
C. Tilting level
D. Wye level
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The global positioning system reached full operational capacity in . . . . . . . .
A. 17th May, 1994
B. 17th July, 1995
C. 17th April, 1995
D. 1st March 1985
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If the chain is found to be too long while testing it is adjusted by . . . . . . . .
A. Straightening the bent links
B. Re-shaping the elougated rings
C. Flattering the circular rings
D. inserting the additional circular rings
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The necessity for dropping a stone from the centre of compass on to the top of a peg is for . . . . . . . .
A. Levelling
B. Centering
C. Sighting
D. Parallex
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The temporary adjustments of theodolite are . . . . . . . .
A. Setting up
B. Centering
C. Levelling
D. Focussing
E. All
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The characteristic feature of a fault is such that the ends of the broken strata overlap and the seam is duplicated along the line of the fault, identify its type,
A. Reverse fault
B. Normal fault
C. Crosscut
D. Drift
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The begining and end of chain lines are known as . . . . . . . .
A. Stations
B. Sub-stations
C. Points
D. Places
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The planimeter rests on . . . . . . . . points.
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The whole circle bearings of two lines are 60° and 150°. The interior angle included between these two lines is . . . . . . . .
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The horizontal distance is obtained by simply multiplying the staff intercept by
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In shaft plumbing the plumb bobs are immersed in a bucket of water to prevent.
A. Kinking of wires
B. Effect of ventilation current
C. Oscillation of wires
D. None
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The principle of Tacheometry is based on the property to . . . . . . . . triangles.
A. Right angle
B. Equilateral
C. Well conditions
D. Isoscelles triangles
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Zero circle condition is obtained while . . . . . . . .
A. Correlating surface station
B. Computing areas under subsidance with the help of planimeter
C. Conducting close survey
D. None
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