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Q1. | Closed contours of decreasing values towards their centre, represent. |

A. | a hill [Wrong Answer] |

B. | a depression [Correct Answer] |

C. | a saddle or pass [Wrong Answer] |

D. | a river bed. [Wrong Answer] |

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Explanation:-
Answer : BDiscuss 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 :**

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

n + 2

2n - 4

2n + 4

4n - 2

⇒ Hydrographic survey deal with the mapping of

Large water bodies

Rainfall data

Wave movement

None of the above

⇒ Systematic errors are those errors.

which cannot be recognised

whose character is understood

whose effects are cumulative and can be eliminated

none of these.

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

bad

good

not reliable

unique.

⇒ It is more difficult to obtain good results while measuringhorizontal distance by stepping.

up-hill

down-hill

in low undulations

in plane areas.

⇒ 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

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

true R.L.

more than true R.L.

less than true R.L.

none of the above

⇒ 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.

⇒ Total latitude of a point is positive if it lies.

north of the reference parallel

south of the reference parallel

east of the reference parallel

west of the reference parallel.

⇒ If the reduced bearing of a line AB is N60°W and length is 100 m, then the latitude and departure respectively of the line AB will be

+50 m, +86.6 m

+86.6 m, -50 m

+50m, -86.6 m

+70.7 m,-50 m

⇒ One of the tacheometric constants is additive, the other constant, is.

subtractive constant

multiplying constant

dividing constant

indicative constant.

⇒ If the rate of gain of radial acceleration is 0.3 m per sec

^{3}and full centrifugal ratio is developed. On the curve the ratio of the length of the transition curve of same radius on road and railway, is.

2.828

3.828

1.828

0.828.

⇒ The area of any irregular figure of the plotted map is measured with.

pentagraph

sextant

clinometer

optical square

⇒ 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°

⇒ You have to observe an included angle with better accuracy than what is achievable by a vernier, you will prefer the method of.

repetition

reiteration

double observations

exactness.

⇒ The bearing of

*AB*is 190° and that of

*CB*is 260° 30'. The included angle

*ABC*, is.

80Â° 30'

99Â° 30'

70Â° 30'

none of these

⇒ For true difference in elevations between two points

*A*and

*B*, the level must be set up.

at any point between A and B

at the exact mid point of A and B

near the point A

near the point B.

⇒ The line of sight is kept as high above ground surface as possible to minimise the error in the observed angles due to.

shimmering

horizontal refraction

vertical refraction

both shimmering and horizontal refraction.

⇒ An imaginary line joining the points of equal elevation on the surface of the earth, represents.

contour surface

contour gradient

contour line

level line

⇒ Bergchrund is a topograhical feature in.

plains

water bodies

hills

glaciated region

⇒ Principle of surveying followed to prevent accumulation of errors is

To work from whole to the part

To work from part to whole

Both (A) and (B)

None of the above

⇒ Pick up the correct statement from the following.

1 second of arc corresponds to a displacement ratio of 1:206, 300

1 degree of arc corresponds to a displacement ratio of 1:57

the angular errors tend to propagate themselves along a traverse as the square root of the number of stations

all the above.

⇒ 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

⇒ The longest chainline passing through the centre of the area is known as

Base line

Tie line

Check line

All the above

⇒ Cross hairs in surveying telescopes, are fitted.

in the objective glass

at the centre of the telescope

at the optical centre of the eye piece

in front of the eye piece.

⇒ The sum of the interior angles of a geometrical figure laid on the surface of the earth differs from that of the corresponding plane figure only to the extent of one second for every.

100 sq. km of area

150 sq. km of area

200 sq. km of area

none of these.

⇒ In reciprocal levelling, the error which is not completely eliminated, is due to.

earth's curvature

non-adjustment of line of collimation

refraction

non-adjustment of the bubble tube.

⇒ 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

⇒ Optical reading instruments.

the vertical circle is usually continuous from 0Â° to 359Â°

the readings increase when the telescope is elevated in the face left position

the readings decrease when the telescope is elevated in the face right position

all the above.

⇒ The rise and fall method

is less.accurate than height of instrument method

is not suitable for levelling with tilting levels

provides a check on the reduction of intermediate point levels

quicker and less tedious for large number of intermediate sights