Surveying
For adjusting a quadrilateral whose both the diagonals are observed, the equations of conditions involved, are

One angle equation and three side equations
Two angle equations and two side equations
Three angle equations and one side equation
None of these

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Surveying
Pick up the incorrect statement from the following. In a spherical triangle

Sum of the three angles less than six right angles and greater than two right angles
Sum of the three angles is equal to two right angles
Sum of any two sides is greater than the third
Every angle is less than two right angles

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Surveying
Normal tension is that pull which

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

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