Surveying
A star may culminate at zenith if its declination is

Greater than the longitude of the place
Less than the latitude of the place
None of these
Equal to the latitude of the place

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Surveying
If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference toi) altitude bubble on index frameii) altitude bubble on index frame if it is to be used as a leveliii) altitude bubble on telescopeiv) altitude bubble on telescope if it is to be used as a level The correct answer is

only (i)
both (ii) and (iii)
both (i) and (iv)
only (iii)

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

error due to non-parallelism of the axis of telescope level and line of collimation
error due to horizontal axis not being perpendicular to the vertical axis
None of these
index error i.e. error due to imperfect adjustment of the vertical circle vernier

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