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Q1. | Determining the difference in elevation between two points on the surface of the earth, is known as. |

A. | levelling [Wrong Answer] |

B. | simple levelling [Wrong Answer] |

C. | differential levelling [Correct Answer] |

D. | longitudinal levelling. [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ In horizontal angles, the error due to imperfect levelling of the plate bubble is.

large when sights are nearly level

large for long sights

less for steeply inclined sights

large for steeply inclined sights.

⇒ Pick up the correct statement from the following :

mistakes arise from inattention, inexperience or carelessness

systematic errors persist and have regular effects in the survey performances

accidental errors occur inspite of every precaution is taken

all the above.

⇒ Principle of surveying followed to prevent accumulation of errors is

To work from whole to the part

To work from part to whole

Both (A) and (B)

None of the above

⇒ The angle of intersection of a curve is the angle between.

back tangent and forward tangent

prolongation of back tangent and forward tangent

forward tangent and long chord

back tangent and long chord.

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

a simple curve

a compound curve

a reverse curve

a vertical curve.

⇒ Ranging is an operation of.

reconnaissance

judging the distance

determination of slope

establishing intermediate points between terminals.

⇒ Resolving power of a telescope depends on.

the diameter of the aperture

the pupil aperture of the eye

the diameter of the object glass

all the above.

⇒ The operation of revolving a plane table about its vertical axis so that all lines on the sheet become parallel to corresponding lines on the ground, is known.

levelling

centering

orientation

setting.

⇒ Cross-staff is used for.

setting out right angles

measuring contour gradient

taking levels

measuring distances

⇒ The least count of a vernier scale is.

sum of the smallest divisions of main and vernier scales

value of one division of the primary scale divided by total number of divisions of vernier scale

value of one division of vernier scale divided by total number of divisions of primary scale

none of these.

⇒ Centering error of a theodolite produces an error.

in all angles equally

which does not vary with the direction or pointing

which varies with the direction of pointing and inversely with the length of sight

none of these.

⇒ An angles of 45° with a chain line may be set out with.

optical square

open cross staff

Fench cross staff

prismatic square.

⇒ If deflection angles are measured in a closed traverse, the difference between the sum of the right-hand and that of the left hand angles should be equal to.

0Â°

90Â°

180Â°

360Â°

⇒ The tangent to the liquid surface in a level tube, is parallel to the axis of the level tube at.

every point of the bubble

either end of the bubble

the mid-point of the bubble

no where.

⇒ The slope correction for a 3° slope for a length of 100 m, is.

-0.11 m

-0.11 m

-1.87 m

-0.137 m

⇒ The back staff reading on a B.M. of R.L. 500.000 m is 2.685 m. If foresight reading on a point is 1.345 m, the reduced level of the point, is.

502.685 m

501.345 m

501.340 m

504.030 m

⇒ The horizontal angle between the true meridian and magnetic meridian at a place is called

azimuth

declination

local attraction

magnetic bearing

⇒ Total latitude of a point is positive if it lies.

north of the reference parallel

south of the reference parallel

east of the reference parallel

west of the reference parallel.

⇒ The total change in level along the line is equal to total back sights.

minus total fore sights

the total rises minus total falls

the reduced level of last point minus reduced level of the first point

all the above.

⇒ 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.

573 S/R

573 R/S

171.9 S/R

1718.9 S/R.

⇒ Rankine's deflection angle in minutes is obtained by multiplying the length of the chord by.

degree of the curve

square of the degree of the curve

inverse of the degree of the curve

none of these.

⇒ Closed contours, with higher value inwards, represent a

depression

hillock

plain surface

none of the above

⇒ A correction for error due to refraction is

0-01 d

^{2}m

0-001 d

^{2}m

0.01122 d

^{2}m

0.078 d

^{2}m

⇒ The foremost work to be executed while traversing with a compass is

Marking and referencing of stations

Running survey lines

Picking up of details

Reconnaissance

⇒ The magnetic meridian at a point can be fixed by

Bar magnets

Electro-magnets

Magnetic compass

None of the above

⇒ The distance between terminal points computed from a subsidiary traverse run between them, is generally known, as.

traverse leg

a base

traverse base

all the above.

⇒ Diopter is the power of a lens having a focal length of.

25 cm

50 cm

75 cm

125 cm

⇒ In a theodolite.

the telescope axis is perpendicular to transit axis

the axis of rotation is perpendicular to transit axis

the telescope axis, the transit axis and the rotation axis pass through the centre of theodolite

all the above.

⇒ The angle of intersection of a contour and a ridge line, is.

30Â°

45Â°

60Â°

90Â°.

⇒ In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by.

adding 180Â°, if the given bearing is less than 180Â°

subtracting 180Â°, if the given bearing, is more than 180Â°

changing the cardinal points, i.e. substituting N for S and E for W and vice-versa

none of these.