Surveying
The great circle along which the sun appears to trace on the celestial sphere with earth as centre during the year, is called

Ecliptic
Celestial equator
None of these
Equator

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Surveying
Spring tides are caused when

None of these
Solar tidal force and lunar tidal force both coincide
Sun and moon are in line with earth
Solar tidal force acts opposite to lunar tidal force

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Surveying
Normal tension is that pull which

makes the correction due to sag equal to zero
makes the correction due to pull equal to zero
is used at the time of standardising the tape
neutralizes the effect due to pull and sag

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