Surveying - Section 1 (6)

Directions to Solve

Surveying - Section 1

Surveying is a part of Civil Engineering and here we provide all the important
MCQs of this topic. You can solve these MCQs by clicking this section.

41.

Pick up the correct statement from the following :

A.	the tangent screw enables to give small movement under conditions of smooth and positive control
B.	standing on the tripod is the levelling head or trib arch
C.	the levelling screws are used to tilt the instrument so that its rotation axis is truly vertical
D.	all the above.

Answer: Option D

Explanation:

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42.

In chain surveying tie lines are primarily provided

A.	to check the accuracy of the survey
B.	to take offsets for detail survey
C.	to avoid long offsets from chain lines
D.	to increase the number of chain lines.

Answer: Option C

Explanation:

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43.

The real image of an object formed by the objective, must lie

A.	in the plane of cross hairs
B.	at the centre of the telescope
C.	at the optical centre of the eye-piece
D.	anywhere inside the telescope.

Answer: Option A

Explanation:

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44.

If S is the length of a subchord and R is the radius of simple curve, the angle of deflection between its tangent and sub-chord, in minutes, is equal to

A.	573 S/R
B.	573 R/S
C.	171.9 S/R
D.	1718.9 R/S
E.	1718.9 S/R.

Answer: Option E

Explanation:

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45.

The radius of curvature of the arc of the bubble tube is generally kept

A.	10 m
B.	25 m
C.	50 m
D.	100 m

Answer: Option D

Explanation:

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46.

The intercept of a staff

A.	is maximum if the staff is held truly normal to the line of sight.
B.	is minimum if the staff is held truly normal to the line of sight.
C.	decreases if the staff is tilted away from normal
D.	increases if the staff is tilted towards normal.

Answer: Option B

Explanation:

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47.

Pick up the correct statement from the following :

A.	the eyepiece plays no part in defining the line of sight
B.	the diaphragm plays no part in defining the line of sight
C.	the optical centre of the objective plays no part in defining the line of sight
D.	none of these.

Answer: Option A

Explanation:

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48.

An ideal vertical curve to join two gradients, is

A.	circular
B.	parabolic
C.	elliptical
D.	hyperbolic
E.	none of these.

Answer: Option B

Explanation:

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