MCQs / Q&A

If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to_________________?

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If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to_________________?

1. altitude bubble on index frame
2. altitude bubble on index frame if it is to be used as a level
3. altitude bubble on telescope
4. altitude bubble on telescope if it is to be used as a level
The correct answer is?
A. only (1)
B. both (1) and (4)
C. only (3)
D. both (2) and (3)

Which of the following errors cannot be eliminated by taking both face observations ?

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Which of the following errors cannot be eliminated by taking both face observations ?

A. error due to horizontal axis not being perpendicular to the vertical axis
B. index error i.e. error due to imperfect adjustment of the vertical circle vernier
C. error due to non-parallelism of the axis of telescope level and line of collimation
D. none of the above

If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will_________________?

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If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will_________________?

A. increase
B. decrease
C. not change
D. either ‘a’ or ‘b’

A’level line’is a______________?

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A’level line’is a______________?

A. horizontal line
B. line parallel to the mean spheriodal surface of earth
C. line passing through the center of cross hairs and the center of eye piece
D. line passing through the objective lens and the eye-piece of a dumpy or tilting level