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Q1. | If the staff is not held vertical at a level¬ling station, the reduced level calculated from the observation would be |

A. | true R.L. [Wrong Answer] |

B. | more than true R.L. [Wrong Answer] |

C. | less than true R.L. [Correct Answer] |

D. | none of the above [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ Ranging in chain survey means.

looking at an isolated point not on the line

establishing an intermediate point on the line

determining the distance between end points

determining the offset distance

⇒ Which of the following instruments can be used for the direct measurement of directions?

Surveyor's compass

Prismatic compass

Any of the above

None of the above

⇒ Volume of the earth work may be calculated by.

mean areas

end areas

Prismoidal formula

all the above.

⇒ Number of links per metre length of a chain are.

2

5

8

10

⇒ 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 method of reversal.

is usually directed to examine whether a certain part is truly parallel or perpendicular to another

makes the erroneous relationship between parts evident

both (a) and (b)

neither (a) nor (b).

⇒ In centesimal system circumference is divided Into

400 parts

360 parts

180 parts

240 parts

⇒ The imaginary line passing through the intersection of cross hairs and the optical centre of the objective, is known as.

line of sight

line of collimation

axis of the telescope

none of these.

⇒ In case of a double line river, contours are.

stopped at the banks of the river

stopped at the edge of the river

drawn across the water

drawn by parabolic curves having their vertex at the centre of the water.

⇒ The properties of autogenous curve for automobiles are given by.

true spiral

cubic parabola

Bernoulli's Lemniscate

clothoid spiral.

⇒ The main principle of surveying is to work.

from part to the whole

from whole to the part

from higher level to the lower level

from lower level to higher level.

⇒ The direction of steepest slope on a contour, is.

along the contour

at an angle of 45Â° to the contour

at right angles to the contour

none of these.

⇒ If n is the number of sides then the total sum of exterior angles of a closed traverse should be

n + 2

2n - 4

2n + 4

4n - 2

⇒ Pick up the correct statement from the following :

spherical aberration may be reduced by diminishing the aperture

spherical aberration may be minimised by replacing the single lens by a combination of the lenses.

in telescope objectives, a combination of convex lens and concave lens is used.

all the above.

⇒ The cross hairs in the surveying telescope are placed

midway between eye piece and objec¬tive lens

much closer to the eye-piece than to the objective lens

much closer to the objective lens than to the eye piece

anywhere between eye-piece and objective lens

⇒ Which of the following methods of con-touring is most suitable for a hilly terrain ?

direct method

square method

cross-sections method

tacheometric method

⇒ A prismatic compass is used to determine

Dip at a place

Declination of a line

Whole circle bearing of a line

Quadrande bearing of a line

⇒ Two contour lines, having the same elevation.

cannot cross each other

can cross each other

cannot unite together

can unite together.

⇒ The magnetic meridian at any point, is the direction indicated by a freely suspended

magnetic needle

and properly balanced magnetic needle

properly balanced and uninfluenced by local attractive force

magnetic needle over an iron pivot.

⇒ Surveys which are carried out to provide a national grid of control for preparation of accurate maps of large areas, are known.

plane surveys

geodetic surveys

geographical surveys

topographical surveys.

⇒ Plotting of inaccessible points on a plane table, is done by.

intersection

traversing

radiation

none of these.

⇒ In plane table survey, the method used for locating plane table station is

Traversina

Resection

Radiation

(A) or (B) above

⇒ Overturning of vehicles on a curve can be avoided by using

compound curve

vertical curve

reverse curve

transition curve

⇒ Straight, parallel and widely spaced contours represent.

a steep surface

a flat surface

an inclined plane surface

curved surface.

⇒ 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.

⇒ The second temporary adjustment to be done after setting up the plane table at any station will be

Levelling

Orientation

Centring and levelling done simultaneously

Sighting

⇒ The sag of 50 m tape weighing 4 kg under 5 kg tension is roughly.

0.043 m

0.053 m

0.063 m

0.083 m

⇒ If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will

increase

decrease

not change

either 'a' or 'b'

⇒ The construction of optical square is based, on the principle of optical.

reflection

refraction

double refraction

double reflection.

⇒ The conventional sign shown in below figure represents a

bridge carrying railway below road

bridge carrying road below railway

bridge carrying road and railway at the same level

a level crossing.