Direct method of contouring is

A level cannot be used forVertical Angles

Alidade is used inPlane Tabling

A'level line'is aline parallel to the mean spheriodal surface of earth

As applied to staff readings, the corrections for curvature and refraction are respectively The above table shows a part of a level field book. The value of X should be100.00

A contour interval is the difference in elevation between one contour line and the next.

A scale of 1:1000 on a topo map indicates that1 unit on the map equals 1000 units in the real world

A set of circles inside circles on a topo map indicate ahill

An airplane takes off from a location at 17°S latitude and flies to a new location 55° due north of its starting point. What latitude has the plane reached? 38°N

An angle of deflection right, may be directly obtained by setting the instrument to readzero on back station

A lemniscate curve will not be transitional throughout, if its deflection angle, is 45°

Aim/Advantage of working from whole to part isErrors are reduced

An ideal vertical curve to join two gradients, isparabolic

An imaginary line joining the points of equal elevation on the surface of the earth, representscontour line

Accuracy of 'fix' by two point problem, isnot reliable

A bearing of a line is also known astrue bearing

ABCD is a regular parallelogram plot of land whose angle BAD is 60°. If the bearing of the line AB is 30°, the bearing of CD, is 210°

An oblate ellipsoid is what? a circle rotated about its major axis

A line connecting points of equal precipitation is an isohyet

A negative declination shows that the magnetic meridian is to the western side of the true meridian

A metallic tape is made ofcloth and wires

A telescope is said to be inverted if its vertical circle is to its right and the bubble of the telescope is down

Agate head is fitted with aprismatic compass

A series of closely spaced contour lines represents asteep slope

A negative declination shows that the magnetic meridian is to thewestern side of the true meridian

A level line is a line parallel to the mean spheroidal surface of the earth

An imaginary line lying througout the surface of ground and preserving a constant inclination to the horizontal is known as contour gradient

Agate cap is fitted with a prismatic compass

B

Benchmark is established by spirit levelling

Bowditch rule is applied to a closed traverse for adjustment of closing error

C

Closed contours of decreasing values towards their centre, represent

A depression

Calculate the gradient if the change in field value is equal to 100 m and the distance is equal to 50 km

2.0 m/km

Contour interval is

Inversely proportional to the scale of the map

Closed contours with higher value inwards represent a

Hillock

Contour interval is

Conversly proportional to the scale of the map

Contour interval is

The vertical distance between two consecutive contours

Cross staff is an instrument used for

Setting out right angles

D

Different grades are joined together by a

Vertical curve

Dumpy level is most suitable when

Many readings are to be taken from a single setting of the instrument

Detailed plotting is generally done by

Radiation

Direct method of contouring is

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