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 (i)

both (ii) and (iii)

only (iii)

both (i) and (iv)

only (i)

both (ii) and (iii)

only (iii)

both (i) and (iv)

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The sidereal day is the time interval between two successive upper transits of

First point of Libra

The polar star

First point of Aries

Mean sun

First point of Libra

The polar star

First point of Aries

Mean sun

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Surveying
If ‘f’ is the focal length of the camera lens and ‘θ’ is the angle of tilt, the distance of the plumb point from the principal point will be

f cos θ

f tan θ

f sec θ

f sin θ

f cos θ

f tan θ

f sec θ

f sin θ

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Surveying
If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer then the hour angle of the star at elongation is given by

None of these

cos H = tan φ . cot δ

tan H = tan φ . cot δ

sin H = tan φ . cot δ

None of these

cos H = tan φ . cot δ

tan H = tan φ . cot δ

sin H = tan φ . cot δ

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Surveying
Parallax bar measures

Height

Height difference

Parallax

Parallax difference

Height

Height difference

Parallax

Parallax difference

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Surveying
The distance between the minor control point and the principal point should be equal to

Sum of the base lines of stereo pair

Mean of the base lines of the stereo pair

Base line of the left photograph of stereo pair

Base line of the right photograph of stereo pair

Sum of the base lines of stereo pair

Mean of the base lines of the stereo pair

Base line of the left photograph of stereo pair

Base line of the right photograph of stereo pair

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Surveying

Surveying The sidereal day is the time interval between two successive upper transits of

Surveying If ‘f’ is the focal length of the camera lens and ‘θ’ is the angle of tilt, the distance of the plumb point from the principal point will be

Surveying If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer then the hour angle of the star at elongation is given by

Surveying Parallax bar measures

Surveying The distance between the minor control point and the principal point should be equal to

Surveying
The sidereal day is the time interval between two successive upper transits of

Surveying
If ‘f’ is the focal length of the camera lens and ‘θ’ is the angle of tilt, the distance of the plumb point from the principal point will be

Surveying
If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer then the hour angle of the star at elongation is given by

Surveying
Parallax bar measures

Surveying
The distance between the minor control point and the principal point should be equal to