Surveying
The angle between the prolongation of the preceding line and the forward line of a traverse is called

direct angle
None of these
included angle
deflection angle

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Surveying
Accidental errors

Do not follow any definite mathematical law
Cannot be removed by applying corrections to the observed values
All of these
Are generally small

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Surveying
Dumpy level is most suitable when

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

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Surveying
The rise and fall method

is not suitable for levelling with tilting levels
quicker and less tedious for large number of intermediate sights
is less accurate than height of instrument method
provides a check on the reduction of intermediate point levels

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