302.  Pick up the correct statement from the following :
A. the length of the brass handle is included in the length of chain
B. the handles are on swivel joints to prevent twisting of the chain
C. the fifth tag from either end of the chain is numbered 5
D. all the above.

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303.  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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304.  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.

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305.  Pick up the correct statement from the following :
A. the tangent screw enables to give small movement under conditions of smooth and positive control
B. standing on the tripod is the levelling head or trib arch
C. the levelling screws are used to tilt the instrument so that its rotation axis is truly vertical
D. all the above.

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306.  Pick up the correct statement from the following :
A. the theodolite in which telescope can be rotated in vertical plane is called a transmit
B. when the vertical circle is to the left of the telescope during observation, it is called to be in left face
C. when the vertical circle is to the right of the telescope during observation, it is called to be in right face
D. all the above.

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307.  In optical reading instruments
A. the vertical circle is usually continuous from 00 to 3590
B. the readings increase when the telescope is elevated in the face left position
C. the readings decrease when the telescope is elevated in the face right position
D. all the above.

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308.  Pick up the correct statement from the following :
A. the eyepiece plays no part in defining the line of sight
B. the diaphragm plays no part in defining the line of sight
C. the optical centre of the objective plays no part in defining the line of sight
D. none of these.

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