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WorksheetsDay 110-Jan 20-worksheet-Btech-Theodolite surveying part 2
Total questions: 15
Worksheet time: 8mins
The imaginary line joining the intersection point of cross-hairs and the optical centre of the objective is known as:
Axis of telescope
Axis of altitude bubble
Line of collimation
Vertical axis
In theodolite survey, swinging refers to rotation of the telescope:
In vertical plane about trunnion axis
In horizontal plane about vertical axis
In vertical plane about vertical axis
In horizontal plane about horizontal axis
Which axis must be perpendicular to the vertical axis for correct horizontal angle measurement?
Line of collimation
Plate bubble axis
Altitude bubble axis
Trunnion (horizontal) axis
Which error is eliminated by taking observations on both face-left and face-right?
Parallax error
Instrument eccentricity
Trunnion axis error
Natural error
Inaccurate bisection of objects is classified under instrumental errors.
True
False
In repetition method, vernier readings increase with every repetition.
True
False
Transiting is the process of rotating the telescope through (a) degrees in the vertical plane.
Swinging the telescope in anticlockwise direction is known as (a) swing.
Keeping the instrument exactly over a station point is termed (a) .
Plate bubble ensures the (a) axis is truly vertical.
A theodolite that allows rotation of telescope through 180° vertically is called (a) theodolite.
Measuring an angle twice in face-left and face-right is known as (a) .
Establishing intermediate points when endpoints are not visible is called (a) in.
Plate level axis must be (a) to the vertical axis for permanent adjustment.
The error caused due to unequal graduation of circles is minimized by (a) method.
