While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates (A) The rotation axis is vertical (B) The trunnion axis is horizontal (C) The line of collimation is perpendicular to vertical axis (D) None of the above

While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the 

same position in its tube, it indicates 

(A) The rotation axis is vertical 

(B) The trunnion axis is horizontal 

(C) The line of collimation is perpendicular to vertical axis 

(D) None of the above

by

1 Answer

Answer :

(A) The rotation axis is vertical

by

Related questions

A theodolite is said to be in perfect adjustment if (A) Rotation axis is vertical to the transit axis (B) Transit axis is perpendicular to line of collimation (C) Line of collimation sweeps out a vertical plane while the telescope is elevated or depressed (D) All the above

Description : A theodolite is said to be in perfect adjustment if (A) Rotation axis is vertical to the transit axis (B) Transit axis is perpendicular to line of collimation (C) Line of collimation sweeps out a vertical plane while the telescope is elevated or depressed (D) All the above

Last Answer : (D) All the above

Which of the following in theodolite work is imperfect adjustment of the instrument (a) Error due to line of collimation being perpendicular to the horizontal axis (b) Error due to axis not to perpendicular of the vertical axis (c) Error due to imperfect graduation (d) Error due to eccentricity of vernires (e) All of the above*

Description : Which of the following in theodolite work is imperfect adjustment of the instrument (a) Error due to line of collimation being perpendicular to the horizontal axis (b) Error due to axis not to perpendicular ... to imperfect graduation (d) Error due to eccentricity of vernires (e) All of the above*

Last Answer : (e) All of the above*

When the bubble of the level tube of a level, remains central (A) Line of sight is horizontal (B) Axis of the telescope is horizontal (C) Line of collimation is horizontal (D) Geometrical axis of the telescope is horizontal

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In an adjusted level, when the bubble is central, the axis of the bubble tube becomes parallel to (A) Line of sight (B) Line of collimation (C) Axis of the telescope (D) None of these

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In a theodolite (A) The telescope axis is perpendicular to transit axis (B) The axis of rotation is perpendicular to transit axis (C) The telescope axis, the transit axis and the rotation axis pass through the centre of theodolite (D) All the above

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In reciprocal levelling, the error which is not completely eliminated, is due to (A) Earth's curvature (B) Non-adjustment of line of collimation (C) Refraction (D) Non-adjustment of the bubble tube

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In a theodolite the line passing through the intersection of the horizontal and vertical cross hairs and the optical centre of the object glass and its continuation, is known as (a) Horizontal axis (b) Vertical axis (c) Line of collination (d) Line of sight (e) Either of c or d above*

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When a mass is rotating in a plane about a fixed point, its angular momentum is directed along: (1) the tangent to the orbit (2) a line perpendicular to the plane of rotation (3) the line making an angle of 45° to the plane of rotation (4) the radius

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A level when set up 25 m from peg A and 50 m from peg B reads 2.847 on a staff held on A and 3.462 on a staff held on B, keeping bubble at its centre while reading. If the reduced levels of A and B are 283.665 m and 284.295 m respectively, the collimation error per 100 m is (A) 0.015 m (B) 0.030 m (C) 0.045 m (D) 0.060 m

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Theodolite is an instrument used for (a) Tightening the capstan-headed nuts of level tube (b) Measurement of horizontal angles only (c) Measurement of vertical angles only (d) Measurement of both horizontal and vertical angles*

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The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes (A) With the horizontal (B) With the vertical (C) With the perpendicular to the inclined plane of the soil (D) None of these

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If the focal length of the object glass is 25 cm and the distance from object glass to the trunnion axis is 15 cm, the additive constant (A) 0.1 (B) 0.4 (C) 0.6 (D) 1.33

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Clockwise of Anti clockwise rotation about the vertical axis to the perpendicular arm is provided through (A) Shoulder swivel (B) Elbow extension (C) Arm sweep (D) Wrist bend

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The diaphragm of a stadia theodolite is fitted with two additional (A) Horizontal hairs (B) Vertical hairs (C) Horizontal and two vertical hairs (D) None of these

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The rotation axis that is perpendicular to the xy plane and passes through the pivot pointis known as a.Rotation b.Translation c.Scaling d.Shearing

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