# surveying

## A stadia telescope, in a tacheometer, is fitted with

A. Two additional vertical hairs B. Two additional horizontal hairs C. All of these

## The principle of tacheometry is used

A.for locating contours B.on hydrographic surveys C.for filling in detail in topographic surveys D.all of these

## When a staff is sighted through the telescope, a certain length of staff is intercepted by the stadia lines. The staff intercept varies with the distance at which the staff is held.

A.Yes B.No undefined undefined

## The additive constant for the tacheometer is

A.f / i B.I / f C.f / d D.f + d

## The multiplying constant for the tacheometer is, generally, kept as

A.20 B.40 C.60 D.100

## The value of additive constant for the tacheometer varies from

A.0 to 15 cm B.15 to 30 cm C.30 to 45 cm D.45 to 60 cm

## When the anallatic lens is provided in the telescope of a tacheometer, the additive constant is zero.

A.Agree B.Disagree undefined undefined

## To the sum of the first and last ordinates, add twice the sum of the intermediate ordinates. The total sum thus obtained is multiplied by the common distance between the ordinates. One-half of this product gives the required area. This rule of finding the area is called

A.mid-ordinate rule B.trapezoidal rule C.average ordinate rule D.Simpson’s rule

## To the sum of the first and last ordinates, add twice the sum of the remaining odd ordinates and four times the sum of all the even ordinates. The total sum thus obtained is multiplied by one-third of the common distance between the ordinates and the result gives the required area. This rule of finding the area is called.

A.mid-ordinate rule B.trapezoidal rule C.average ordinate rule D.Simpson’s rule

## The area of any irregular figure can be calculated accurately with the help of a planimeter.

A.True B.False undefined undefined