Test: Levelling - 1 - Civil Engineering (CE) MCQ

horizontal line

line parallel to the mean spheroidal surface of earth

line passing through the centre of cross hairs and the centre of eye piece

line passing through the objective lens and the eyepiece of a dumpy or tilting level

level line is a curved line while horizontal line is a straight line

level line is normal to plumb line while horizontal line may not be normal to plump line at the tangent point to level line

horizontal line is normal to plumb line while level line may not be normal to the plumb line

both are same

decreases

increases

remains unaffected

none of the above

+ and -

- and +

+ and +

- and -

∑BS - ∑FS = ∑Rise - ∑Fall only

∑BS - ∑FS = ∑Last RL - First RL only

XRise - ∑Fall = ∑Last RL - First RL only

∑BS - ∑FS = ∑Rise - ∑Fall = Last RL - First RL

the top of summit

the bottom of a valley

only side of the slope

anywhere

Error due to refraction may not be completely eliminated by reciprocal levelling

Tilting levels are commonly used for precision work

The last reading of levelling is always a foresight

All of the above statements are incorrect

hypsometry

barometric levelling

spirit levelling

trigonometrical levelling

100 sqkm

160 sqkm

200 sq km

260 sq km