Engineering :: Surveying

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201.

Which of the following statement is wrong?

A.	A series of closed contour lines on the map indicates a depression if the higher values are inside	B.	A series of closed contour lines on a plane indicates a hill if the higher values are outside.
C.	The uniformly spaced contour lines indicates a plane surface.	D.	all of the above

202.

Contour lines cross ridge or valley lines at

A.	30?	B.	45?
C.	60?	D.	90?

203.

The points on a contour gradient will have the same elevation.

True

False

204.

The reduced level of a point on the ground is called

A.	spot level	B.	spot height
C.	either (a) or (b)	D.	none of these

205.

In route surveys, the most suitable method of contouring is

A.	by squares	B.	by radial lines
C.	by cross-sections	D.	by tacheometer

206.

The tachemometric method of contouring is particularly suitable

A.	when a contoured map of hill is required	B.	when the area is not very extensive
C.	in surveys of roads or railways	D.	all of these

207.

The spacing of cross-sections in a hilly country is usually

A.	5 m	B.	10 m
C.	15 m	D.	20 m

208.

In indirect method of contouring, the best method of interpolation of contours is

A.	by graphical method	B.	by estimation
C.	by arithmetical calculation	D.	all of these

209.

The method of surveying in which field work and plotting work are done simultaneously, is called

A.	compass surveying	B.	levelling
C.	plane tabling	D.	chain surveying

210.

In plane tabling, the instrument used to measure horizontal and vertical distances directly, is known as

A.	plane alidade	B.	telescopic alidade
C.	tacheometer	D.	clinometer