Civil Engineering :: Advanced Surveying
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The angle between the direction of star and the direction of earth's axis of rotation is called
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If v, t and
are the ground speed of the aircraft, the shutter speed of the camera and the scale of the photograph respectively, then the amount of image displacement -
Pick up the correct statement from the following :
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The circle in which a plane tangent to the earth's surface at the point of observation, intersects the celestial sphere, is called
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If θ and δ be the latitude of an observer and declination of a heavenly body respectively, the upper culmination of the body will be south of zenith if its zenith distance, is
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Invar tapes used for measuring base lines, is made of nickel-iron alloy containing nickel
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Triangulation surveys are carried out for locating
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The movement of the projector in y-direction, introduces in the model a y-parallax
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A.
The angle between the plane of the negative and the horizontal plane containing perspective axis is the tilt of the photograph
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B.
The direction of maximum tilt is defined by the photo principal line
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C.
The principal plane is truly vertical plane which contains perspective centre as well as principal point and plumb point
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D.
All the above.
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(θ - δ).