## Surveying MCQ Practice Questions (Civil Engineering) Set 6

##### Greater accuracy in linear measurements, is obtained by:

Options are :

• Direct taping
• All the above
• Direct chaining
• Tacheometry

##### In case of reduction of levels by the height of instrument method:

Options are :

• ? (R.L. + I + F.S.) - first R.L = ? (H.I. + No. of R.L.s.)
• ? B.S. - ? F.S. = difference in R.L.S of the first station and last station
• None of these
• Both A and B

##### Magnetic declination at any place:

Options are :

• Changes abruptly
• Does not remain constant
• Remains constant
• Fluctuates

##### From any point on the surface with a given inclination:

Options are :

• All the above
• Indefinite contour gradients are possible
• Two contour gradients are possible
• Only one contour gradient is possible

##### For preparation of a contour plan for a route survey:

Options are :

• Indirect method of contouring is used
• Method of cross profile is used
• Method of trace contour is used
• Method of squares is used

Answer :Method of cross profile is used

##### Ranging in chain survey means:

Options are :

• Determining the distance between end points
• Determining the offset distance
• Establishing an intermediate point on the line
• Looking at an isolated point not on the line
• None of these

Answer :Establishing an intermediate point on the line

Options are :

• 105°
• 285°
• 75°
• 255°

##### Pick up the correct statement from the following:

Options are :

• If the image of the object does not fall on the plane of the cross-lines, parallax exists
• The eyepiece is adjusted for clear vision of the cross hairs
• Parallax has nothing to do with the eyepiece
• All the above

##### While measuring a chain line between two stations A and B intervened by a raised ground:

Options are :

• Vision gets obstructed
• All the above
• Both vision and chaining get obstructed
• Chaining gets obstructed

Options are :

• Straight
• Parabolic
• Elliptic
• Circular

Options are :

• 1 kg
• 4 kg
• 2 kg
• 3 kg

##### The 'point of curve' of a simple circular curve, is:

Options are :

• Mid-point of the curve
• Point of intersection
• Point of commencement
• Point of tangency

Options are :

• l = k?sin 2?
• l = k?tan 2?
• l = k?sin 3?
• l = k?sin ?
• l = k?cos 2?

Options are :

• S 60° E
• S 20° E
• N 60° E
• N 120° E

##### While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates:

Options are :

• The trummion axis is horizontal
• The line of collimation is perpendicular to vertical axis
• None of the above
• The rotation axis is vertical

Answer :The rotation axis is vertical

##### With usual notations, the expressionLarger image represents:

Options are :

• Centrifugal force
• Centrifugal ratio
• Super elevation

##### Ramsden eye-piece consists of:

Options are :

• Two convex lenses short distance apart
• Two concave lenses short distance apart
• Two plano-convex lenses short distance apart, with the convex surfaces facing each other
• One convex lens and one concave lens short distance apart

Answer :Two plano-convex lenses short distance apart, with the convex surfaces facing each other

##### Pick up the correct statement from the following:

Options are :

• The angle between the true meridian and the magnetic meridian is called magnetic variation
• All the above
• The magnet properly pivoted is balanced by means of riding weight movable along the needle
• In the earth's magnetic field, a magnetic needle rests in magnetic meridian
• One end of the magnetic needle supported at its centre of gravity tends to dip down towards the. nearer magnetic pole of the earth

##### Volume of the earth work may be calculated by:

Options are :

• All the above
• Mean areas
• End areas
• Prismoidal formula
• Trapezoidal

##### A clinometer is used for:

Options are :

• Defining natural features
• Setting out right angles
• Measuring angle of slope
• Correcting line of collimation

##### Pick up the correct statement from the following:

Options are :

• The lines of sight while observing back sight and fore sight lie in the same horizontal plane
• The horizontal plane with reference to which staff readings are taken, coincides with the level surface through the telescope axis
• The staff readings are measurements made vertically downwards from a horizontal plane
• All the above

##### In a constant level tube, size of the bubble remains constant because upper wall is:

Options are :

• Flat
• Convex downwards

##### Cross-staff is used for:

Options are :

• Measuring distances
• Taking levels
• None of these
• Setting out right angles

##### Transition curves are introduced at either end of a circular curve, to obtain:

Options are :

• Gradual change of gradient from zero at the tangent point to the specified amount at the junction of the transition curve with main curve
• Gradual increase of super-elevation from zero at the tangent point to the specified amount at the junction of the transition curve with main curve
• None of these
• Gradually decrease of curvature from zero at the tangent point to the specified quantity at the junction of the transition curve with main curve

Answer :Gradual increase of super-elevation from zero at the tangent point to the specified amount at the junction of the transition curve with main curve

Options are :

• A
• B
• C
• E
• D

##### Back bearing of a line is equal to:

Options are :

• Fore bearing ± 90°
• Fore bearing ± 360°
• Fore bearing ± 180°
• Fore bearing ± 270°

Options are :

• B
• A
• D
• C

##### For orientation of a plane table with three points A, B and C, Bessel's drill is:

Options are :

• In the first two steps any two of the points may be used and a ray drawn towards the third point, which is sighted through the point of intersection of previously drawn rays in the final step
• Align b through a and draw a ray towards c, align a through b and draw a ray towards c, finally align c through the point of intersection of the previously drawn rays
• Align c through b and draw a ray towards a, align b through c and draw a ray towards a, finally align a, through the point of intersection of the previously, drawn rays
• Align c through a and draw a ray towards b, align a through c and draw a ray towards b, finally align b through the point of intersection of the previously drawn rays

Answer :In the first two steps any two of the points may be used and a ray drawn towards the third point, which is sighted through the point of intersection of previously drawn rays in the final step

Options are :

• B
• A
• C
• D

##### The curve composed of two arcs of different radii having their centres on the opposite side of the curve, is known:

Options are :

• A reverse curve
• A compound curve
• A vertical curve
• A simple curve