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Q1. | If the length of a chain is found to be short on testing, it can be adjusted by |

A. | straightening the links [Correct Answer] |

B. | removing one or more small circular rings [Wrong Answer] |

C. | closing the joints of the rings if opened out [Wrong Answer] |

D. | all of the above [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 :**

⇒ Contour interval is

the vertical distance between two con-secutive contours

the horizontal distance between two consecutive contours

the vertical distance between two points on same contour

the horizontal distance between two points on same contour

⇒ A'level line'is a

horizontal line

line parallel to the mean spheriodal surface of earth

line passing through the center of cross hairs and the center of eye piece

line passing through the objective lens and the eye-piece of a dumpy or tilting level

⇒ If the horizontal distance between the staff point and the point of observation is d, then the error due to curvature of earth is proportional to

d

1/d

d2

1/d2

⇒ Which of the following methods of offsets involves less measurement on the ground?

method of perpendicular offsets

method of oblique offsets

method of ties

all involve equal measurement on the ground

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

optical square

open cross staff

Fench cross staff

prismatic square.

⇒ The difference in the lengths of an arc and its subtended chord on the earth surface for a distance of 18.2 km, is only.

1 cm

5 cm

10 cm

100 cm.

⇒ 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 curvature of the earth's surface, is taken into account only if the extent of survey is more than.

100 sq km

160 sq km

200 sq km

260 sq km.

⇒ A traverse deflection angle is.

A traverse deflection angle is

more than 90Â° but less than 180Â°

the difference between the included angle and 180Â°

the difference between the included angle and 180Â°

⇒ 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.

⇒ 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

⇒ A back sight.

is always taken on a point of known elevation or can be computed

is added to the known level to obtain the instrument height

taken on an inverted staff is treated as negative

all the above.

⇒ Pick up the correct statement from the following :

The directions of plumb lines suspended at different points in a survey are not strictly parallel

In surveys of small extent, the effect of curvature may be ignored and the level surface of the earth is assumed as horizontal

In surveys of large extent, the effect of curvature of the earth must be considered

All the above.

⇒ 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.

⇒ The instrument used for accurate centering in plane table survey is

spirit level

alidade

plumbing fork

trough compass

⇒ The suitable contour interval for a map with scale 1 : 10000 is

2 m

5m

10 m

20 m

⇒ In the quadrantal bearing system, a whole circle bearing of 293° 30' can be expressed as

W23°30'N

N66°30'W

S113°30'N

N23°30'W

⇒ During chaining along a straight line, the . leader of the party has 4 arrows in his hand while the follower has 6. Distance of the follower from the starting point is

4 chains

6 chains

120 m

180m

⇒ A series of closely spaced contour lines represents a

steep slope

gentle slope

uniform slope

plane surface

⇒ An internal focussing type surveying telescope, may be focussed by the movement of.

objective glass of the telescope

convex-lens in the telescope

concave lens in the telescope

plano-convex lens in the telescope.

⇒ The main plate of a transit is divided into 1080 equal divisions. 60 divisions of the vernier coincide exactly with 59 divisions of the main plate. The transit can read angles accurate upto.

5"

10"

15"

20"

⇒ In a plane table survey the plotting of inaccessible points can be conveniently done by

Method of interpolation

Method of radiation

Method of traversing.

Method of intersection

⇒ The reduced bearing of a line is N 87° W. Its whole circle bearing is.

87Â°

273Â°

93Â°

3Â°

⇒ 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 the magnetic bearing of the sun at a place at noon in southern hemisphere is 167°, the magnetic declination at that place is

77° N

23° S

13° E

13° W

⇒ 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.

⇒ In levelling operation.

when the instrument is being shifted, the staff must not be moved

when the staff is being carried forward, the instrument must remain stationary

both (a) and (b)

neither (a) nor (b).

⇒ The adjustment of horizontal cross hair is required particularly when the instrument is used for

leveling

prolonging a straight line

measurement of horizontal angles

all of the above

⇒ At the equator, the amount of dip is

0°

45°

60°

90°

⇒ The correction for sag is

always additive

always subtractive

always zero

sometimes additive and sometimes subtractive