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 levelThe correct answer is

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 levelThe correct answer is

only (iii)

only (i)

both (ii) and (iii)

both (i) and (iv)

only (iii)

only (i)

both (ii) and (iii)

both (i) and (iv)

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Which of the following errors can be eliminated by taking mean of bot face observations ?

error due to line of collimation not being perpendicular to horizontal axis

error due to eccentricity of verniers

error due to imperfect graduations

error due to imperfect adjustment of plate levels

error due to line of collimation not being perpendicular to horizontal axis

error due to eccentricity of verniers

error due to imperfect graduations

error due to imperfect adjustment of plate levels

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Sensitiveness of a level tube is designated by

radius of level tube

length of level tube

length of bubble of level tube

None of these

radius of level tube

length of level tube

length of bubble of level tube

None of these

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The height displacement on a vertical photograph

Increases as the ground elevation increases

Increases as the horizontal distance increases from the principal point

Decreases as the flying height increases

All listed here

Increases as the ground elevation increases

Increases as the horizontal distance increases from the principal point

Decreases as the flying height increases

All listed here

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The latitude of a place was obtained by subtracting the declination of a star from its zenith distance, the observed star was between

Pole and horizon

Equator and zenith

Zenith and pole

Horizon and equator

Pole and horizon

Equator and zenith

Zenith and pole

Horizon and equator

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The allowable length of an offset depends upon the

All of these

degree of accuracy required

scale of plotting

method of setting out the perpendiculars and nature of ground

All of these

degree of accuracy required

scale of plotting

method of setting out the perpendiculars and nature of ground

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Surveying

Surveying Which of the following errors can be eliminated by taking mean of bot face observations ?

Surveying Sensitiveness of a level tube is designated by

Surveying The height displacement on a vertical photograph

Surveying The latitude of a place was obtained by subtracting the declination of a star from its zenith distance, the observed star was between

Surveying The allowable length of an offset depends upon the

Surveying
Which of the following errors can be eliminated by taking mean of bot face observations ?

Surveying
Sensitiveness of a level tube is designated by

Surveying
The height displacement on a vertical photograph

Surveying
The latitude of a place was obtained by subtracting the declination of a star from its zenith distance, the observed star was between

Surveying
The allowable length of an offset depends upon the