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Q1. | Geodetic surveying is undertaken. |

A. | for production of accurate maps of wide areas [Wrong Answer] |

B. | for developing the science of geodesy [Wrong Answer] |

C. | making use of most accurate instruments and methods of observation [Wrong Answer] |

D. | all the above. [Correct Answer] |

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**Also Read Similar Questions Below :**

⇒ A transit is oriented by setting its vernier A to read the back azimuth of the preceding line. A back sight on the preceding transit station taken and transit is rotated about its vertical axis. The vernier A reads.

azimuth of the forward line

bearing of the. forward line

back bearing of the forward line

equal to 360Â°-azimuth of the forward line.

⇒ If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is

99.345 m

100.345 m

100.655m

101.870m

⇒ Which of the following could be used for fixing the arbitrary direction ?

River

Moving train

Road

Top of a chimney

⇒ The permissible limits of errors in chaining for measurement on rough or hilly ground is

1 : 2000

1 : 1000

1 : 500

1 : 250

⇒ Prolongation of chain line across an obstruction in chain surveying, is done by.

making angular measurements

drawing perpendiculars with a chain

solution of triangles

all the above.

⇒ The permissible error in chaining for measurement with chain on rough or hilly ground is

1 in 100

1 in 250

1 in 500

1 in 1000

⇒ Pick up the correct statement from the following :

in the earth's magnetic field, a magnetic needle rests in magnetic meridian

the angle between the true meridian and the magnetic meridian is called magnetic variation

one end of the magnetic needle supported at its centre of gravity tends to dip down towards the. nearer magnetic pole of the earth

all the above.

⇒ The length of a traverse leg may be obtained by multiplying the latitude and.

secant of its reduced bearing

sine of its reduced bearing

cosine of its reduced bearing

tangent of its reduced bearing.

⇒ Generally while chaining the arrow which accompany with one chain must be

2 Nos

5 Nos

10 Nos

12 Nos

⇒ The process of determining the locations of the instrument station by drawing re sectors from the locations of the known stations is called

radiation

intersection

resection

traversing

⇒ Pick up the correct statement from the following :

to locate a gross error in bearing that may exist in controlled theodolite traverse, we may plot the traverse from each end. The traverse station having the same coordinates by each route is the one where the error lies

to locate a gross error in bearing, in a controlled traverse, we plot the traverse and the station through which perpendicular to sector of the closing line passes is the station at which the error was made

to locate a gross error due to taping in a controlled traverse, we plot the traverse to a convenient scale. The bearing of the closing error will be approximately the same as that of the leg in which the gross error consists

all the above.

⇒ The length of a chain is measured from

centre of one handle to centre of other handle

outside of one handle to outside of other handle

outside of one handle to inside of other handle

inside of one handle to inside of other handle

⇒ If whole circle bearing of a line is 120°, its reduced bearing is.

S 20Â° E

S 60Â° E

N 120Â° E

N 60Â° E.

⇒ Locating the position of a plane table station with reference to three known points, is known as.

intersection method

radiation method

resection method

three point problem.

⇒ The direction of a line relative to a given median is called

Angular direction

Bearing

Deviation

Inclination

⇒ In a telescope the object glass of focal length 14 cm, is located at 20 cm from the diaphragm. The focussing lens is midway between them when a staff 16.50 m away is focussed. The focal length of the focussing lens, is.

5.24 cm

6.24 cm

7.24 cm

8.24 cm

⇒ 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.

⇒ 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

⇒ A theodolite is said to be in perfect adjustment if.

rotation axis is vertical to the transit axis

transit axis is perpendicular to line of collimation

line of collimation sweeps out a vertical plane while the telescope is elevated or depressed

all the above.

⇒ A staff reading taken on a bench mark or change point is known as

Back siLT,ht

Fore sight

Intermediate sight

None of the above

⇒ The angle of intersection of the two plane mirrors of an optical square is

30°

45°

60°

90°

⇒ The Random errors tend to accumulate proportionally to.

numbers of operations involved

reciprocal of operations involved

square root of the number of operation involved

cube root of the number of operation involved.

⇒ The error due to eccentricity of inner and outer axes can be eliminated by

reading both verniers and taking the mean of the two

taking both face observations and taking the mean of the two

double sighting

taking mean of several readings distributed over different portions of the graduated circle

⇒ The least count of prismatic compass is

1°

30'

15'

20"

⇒ True meridian of different places.

converge from the south pole to the north pole

converge from the north pole to the south pole

converge from the equator to the poles

run parallel to each other.

⇒ The correction for sag is

always additive

always subtractive

always zero

sometimes additive and sometimes subtractive

⇒ For the construction of highway (or railway).

longitudinal sections are required

cross sections are required

both longitudinal and cross sections are required

none of these.

⇒ If the length of a chain is found to be short on testing, it can be adjusted by

straightening the links

removing one or more small circular rings

closing the joints of the rings if opened out

all of the above

⇒ Which of the following errors can be neutralised by setting the level midway between the two stations ?

error due to curvature only

error due to refraction only

error due to both curvature and re-fraction

none of the above

⇒ In geodetic surveys higher accuracy is achieved, if.

curvature of the earth surface is ignored

curvature of the earth surface is taken into account

angles between the curved lines are treated as plane angles

none of these.