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Q1. | If whole circle bearing of a line is 120°, its reduced bearing is. |

A. | S 20Â° E [Wrong Answer] |

B. | S 60Â° E [Correct Answer] |

C. | N 120Â° E [Wrong Answer] |

D. | N 60Â° E. [Wrong Answer] |

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

⇒ Invar tapes are made of an alloy of

Nickel and steel

Copper and steel

Tin and steel

Aluminium and steel

⇒ In levelling operation.

if second reading is more than first, it represents a rise

if first reading is more than second, it represents a rise

if first reading is less than second, it represents a fall

both (b) and (c).

⇒ If

*R*is the radius of the main curve, θ the angle of deflection,

*S*the shift and

*L*the length of the transition curve, then, total tangent length of the curve, is.

(R - S) tan Î¸/2 - L/2

(R + S) tan Î¸/2 - L/2

(R + S) tan Î¸/2 + L/2

(R - S) tan Î¸/2 + L/2

⇒ 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

⇒ As per Indian standard, the length of one link in 30 metre chain should be

30 cm

20 cm

40 cm

10 cm

⇒ The theodolites used for making tacheometric observations by optical wedge system, are.

provided with stadia hairs in front of eye piece

not provided with stadia hairs at all

fitted with a glass wedge inside the telescope

fitted with a glass wedge in front of telescope.

⇒ Height of instrument method of levelling is

more accurate than rise and fall method

less accurate than rise and fall method

quicker and less tedious for large number of intermediate sights

none of the above

⇒ Pick up the correct statement from the following :

if the image of the object does not fall on the plane of the cross-lines, parallax exists

parallax has nothing to do with the eyepiece

the eyepiece is adjusted for clear vision of the cross hairs

all the above.

⇒ True meridians are generally preferred to magnetic meridians because.

these converge to a point

these change due to change in time

these remain constant.

None of these.

⇒ 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.

⇒ The boundary of water of a still lake, represents.

level surface

horizontal surface

contour line

a concave surface.

⇒ 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 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 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

⇒ If θ is the slope of the ground and

*l*is the measured distance, the correction is.

2l sin2 Î¸/2

2l cos2 Î¸/2

2l tan2 Î¸/2

2l cot2 Î¸/2.

⇒ If a tacheometer is fitted with an anal-latic lens.

additive constant is 100, multiplying constant is zero

multiplying constant is 100, additive constant is zero

both multiplying and additive constants are 100

both multiplying and additive constants are 50.

⇒ The magnetic bearing of a line is 32° and the magnetic declination is 10° 15' W. The true bearing is.

contour line

contour gradient

level line

line of gentle scope.

⇒ If the angular measurements of a traverse are more precise than its linear measurements, balancing of the traverse, is done by.

Bowditch's rule

Transit rule

Empirical rule

all of the above.

⇒ The sensitiveness of a level tube decreases if.

radius of curvature of its inner surface is increased

diameter of the tube is increased

length of the vapour bubble is increased

both viscosity and surface tension are increased.

⇒ Two concave lenses of 60 cm focal length are cemented on either side of a convex lens of 15 cm focal length. The focal length of the combination is.

10 cm

20 cm

30 cm

40 cm

⇒ Select the correct statement.

A contour is not necessarily a closed curve.

A contour represents a ridge line if the concave side of lower value con¬tour lies towards the higher value contour.

Two contours of different elevations do not cross each other except in case of an overhanging cliff.

All of the above statements are correct.

⇒ 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.

⇒ If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as.

direct vernier

double vernier

retrograde vernier

simple vernier.

⇒ Agate cap is fitted with a

cross staff

level

chain

prismatic compass

⇒ What is the whole circle bearing of a quadrant bearing N 15° 28' W

195°28'

164°32'

344°32'

344°28'

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

spirit level

alidade

plumbing fork

trough compass

⇒ 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

⇒ Horizontal distances obtained tacheometerically are corrected for.

slope correction

temperature correction

refraction and curvature correction

all the above.

⇒ The angle between the prolongation of the preceding line and the forward line of a traverse is called

deflection angle

included angle

direct angle

none of the above

⇒ Pick up the correct statement from the following :

the tangent screw enables to give small movement under conditions of smooth and positive control

standing on the tripod is the levelling head or trib arch

the levelling screws are used to tilt the instrument so that its rotation axis is truly vertical

all the above.