SURVEYING QUIZ | EXAMIANS

Which of the following methods of offsets involves less measurement on the ground?

all involve equal measurement on the ground

method of oblique offsets

method of perpendicular offsets

method of ties

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Stellar astronomy deals with

Star observations

Plane surveying

Planet observations

Geodetic surveying

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The allowable length of an offset depends upon the

degree of accuracy required

scale of plotting

method of setting out the perpendiculars and nature of ground

All of these

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The meridian of a place is

A great circle passing through the place and the poles

A semi-circle which passes through the place and is terminated at the poles

An arc of the great circle which passes through the place and is perpendicular to the equator

A great circle whose plane is perpendicular to the axis of rotation and it also passes through the place

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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 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

both (i) and (iv)

only (i)

only (iii)

both (ii) and (iii)

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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 sin θ

f sec θ

f cos θ

f tan θ

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Parallax bar measures

Height

Height difference

Parallax difference

Parallax

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If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167°, the magnetic declination at that place is

23° S

13° W

77° N

13° E

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A telescope is said to be inverted if its

vertical circle is to its left and the bubble of the telescope is up

vertical circle is to its right and the bubble of the telescope is up

vertical circle is to its right and the bubble of the telescope is down

vertical circle is to its left and the bubble of the telescope is down

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G.M.T. corresponding to given mean time, equals

L.M.T. - East longitude in time

L.M.T. + East longitude in time

L.M.T. - West longitude in time

None of these

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