Surveying
Dumpy level is most suitable when

fly levelling is being done over long distance
many readings are to be taken from a single setting of the instrument
All of these
the instrument is to be shifted frequently

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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
Every angle is less 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

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