While surveying a plot of land by plane tabling, the field observations

Closed contours of decreasing values towards their centre, represent

Straight parallel and widely spaced contours represent

The contour interval, within limits of a map

The boundary of water of a still lake,represents

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

For the preparation of high way project

While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of levelling staff and cross hairs, the instrument is

The line of collimation method of reduction of levels, does not provide a check on

A relatively fixed point of known elevation above datum, is called

The line normal to plumb line at all points is known as

The sensitiveness of a level tube decreases if

An imaginary line passing through the intersection of cross hairs and optical centre of the objective is known as

In an adjusted level, when the bubble is centred, the axis of the bubble tube becomes parallel to

Contour lines can not cross each other except in case of

The level difference in between two consecutive contours is called

The least count of a leveling staff is

The magnetic bearing of a line is 55° 30' and the magnetic declination is 4° 30' West. The true bearing of the line will beA.510B

At the equator, the amount of dip is

The horizontal angle between the true meridian and magnetic meridian is known as

In a whole circle bearing System, S 30° 15' E corresponds to

Sum of exterior angles of a closed traverse of sides 'N' is equal to

The bearing of line AB is 180° and bearing of line BC is 30°, then included angle B is

The fore bearing of a line is N 30° E ,then it's back bearing is

The whole circle bearing of a line is 185º.Then it's reduced bearing is

The line in which the plane passing through the given point, north pole and south pole intersects the surface of the earth is called

In prismatic compass the graduations are marked such that zero is at

The least count of prismatic compass is

The angle of intersection of the horizon glass and index glass in an optical square is

In a well-conditioned triangle no angle should be less than

The error in measured length due to sag of a chain or tape is known as

Pentagraph is an instrument used to

The error in measured length due to incorrect holding of chain is

The instrument attached to the vehicle in order to measure the distance is called

When 1 cm on a map represents 10 m on the ground the representative fraction of the scale is

The fundamental principle of surveying is to work from

The area of a map of a plot is measured with a planimeter is found to be 1 m² . The map was drawn to a scale of 1:1000 Then the true area of the plot is

Clinometer is an instrument which is commonly used for measuring

Metallic tape is made up of

In metric chain the length of one link is equal to

In S.I. system the unit of length is

The survey in which the curvature of earth is taken into consideration

The tapered steps which are provided for changing the direction of a stair

A temporary structure constructed to support an unsafe structure, temporarily

The number of reaction component at a hinged support

The shape of an automobile lamp reflector

The wooden queen post truss is suitable for spans varying from

The surface of the ground in its final shape and level after completion of earth work

Waste water from bathrooms, labatory basins, kitchen sinks etc. which does not contain human excreta

The ratio of the weight of any given volume of a substance to the weight of an equal or volume of pure water is termed as