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Q1. | For locating a distant object visible from two transit stations, the method usually preferred to, is. |

A. | Angles and distances from transit stations [Wrong Answer] |

B. | Angles from two transit stations [Correct Answer] |

C. | distance from two transit stations [Wrong Answer] |

D. | Angle from one transit station and distance from the other. [Wrong Answer] |

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

⇒ The bearing of lines

*OA*and

*OB*are 16° 10' and 332° 18', the value of the included angle

*BOA*is.

316Â° 10'

158Â° 28'

348Â° 08'

43Â° 52'

⇒ In levelling the error due to refraction is

Positive

Negative

Compensating

Progressive

⇒ The desired sensitivity of a bubble tube with 2 mm divisions is 30". The radius of the bubble tube should be.

13.75 m

3.44 m

1375 m

none of these.

⇒ The chaining on sloping ground is.

easier along the falling gradient

easier along the up gradient

equally convenient along falling as well as up gradient

all the above.

⇒ In the double application of principle of reversion, the apparent error is

equal to true error

half the true error

two times the true error

four times the true error

⇒ Hydrographic surveys deal with the mapping of.

large water bodies

heavenly bodies

mountaineous region

canal system

⇒ The orthographical projection of a traverse leg upon the reference meridian, is known as.

departure of leg

latitude to the leg

co-ordinate of the leg

bearing of the leg.

⇒ Systematic errors are those errors.

which cannot be recognised

whose character is understood

whose effects are cumulative and can be eliminated

none of these.

⇒ The instrument which is used in plane tabling for obtaining horizontal and vertical distances directly without resorting to chaining, is known as.

Plane alidade

telescopic alidade

clinometer

tacheometer.

⇒ The error due to bad ranging is

Compensation

Cumulative positive

Cumulative negative

Both (B) and (C) above

⇒ Detailed plotting is generally done by

radiation

traversing

resection

all of the above

⇒ In an internal focusing telescope.

the objective is at a fixed distance from the diaphragm

the focusing is done by the sliding of a divergent lens.

the focusing divergent lens is situated at about the middle of the tube

all the above.

⇒ Horizontal distances obtained tacheometerically are corrected for.

slope correction

temperature correction

refraction and curvature correction

all the above.

⇒ Accuracy of 'fix' by two point problem, is.

bad

good

not reliable

unique.

⇒ Subtense bar is an instrument used for

levelling

measurement of horizontal distances in plane areas

measurement of horizontal distances in undulated areas

measurement of angles

⇒ If the length of a transition curve to be introduced between a straight and a circular curve of radius 500 m is 90 m, the maximum perpendicular offset for the transition curve, is.

0.70 m

1.70 m

2.70 m

3.70 m

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

21Â° 45'

42Â° 15'

42Â° 15' W

21Â° 45' W

⇒ 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.

⇒ 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.

⇒ Pick up the correct statement from the following :

the framework which consists of a series of connected lines, the lengths and directions of which are found from measurements, is called a traverse.

the system of a series of lines which forms a circuit which ends at the starting point, is called a closed traverse

the traverse that starts from a point already fixed in some survey system and ends on another such point, is called a controlled traverse

all the above.

⇒ If the whole circle bearing of a line is 270°, its reduced bearing is.

N 90Â° W

S 90Â° W

W 90Â°

90Â° W.

⇒ The bubble tube is nearly filled with.

alcohol or chloroform

a liquid which is very mobile

a liquid having low freezing point

all the above.

⇒ 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 conventional sign shown in below figure represents a

road bridge

railway bridge

canal bridge

aquaduct.

⇒ During levelling if back sight is more than foresight.

The forward staff is at lower point

The back staff is at lower point

The difference in level, cannot be ascertained.

none of these.

⇒ An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as

contour line

horizontal equivalent

contour interval

contour gradient

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

true spiral

cubic parabola

Bernoulli's Lemniscate

clothoid spiral.

⇒ Correction per chain length of 100 links along a slope of α radians, is.

100 Î±2

100 Î±

100 Î±3

100 Î±-1.

⇒ Perpendicular offset from a tangent to the junction of a transition curve and circular curve is equal to.

shift

twice the shift

thrice the shift

four times the shift.

⇒ The surface of zero elevation around the earth, which is slightly irregular and curved, is known as.

mean sea level

geoid surface

level surface

horizontal surface.