Civil Engineering :: Surveying
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In chain surveying field work is limited to
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Two concave lenses of 60 cm focal length are cemented on either side of a convex lens of 15 cm focal length. The focal length of the combination is
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One of the tacheometric constants is additive, the other constant, is
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The limiting length of an offset does not depend upon
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In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by
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If L is the perimeter of a closed traverse, ΔD is the closing error in departure, the correction for the departure of a traverse side of length l, according to Bowditch rule, is
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Pick up the correct statement from the following:
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Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following
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While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is
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A.
the theodolite in which telescope can be rotated in vertical plane is called a transit |
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B.
when the vertical circle is to the left of the telescope during observation, it is called to be in left face |
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C.
when the vertical circle is to the right of the telescope during observation, it is called to be in right face |
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D.
all the above. |