# Civil Engineering - Surveying

### Exercise :: Surveying - Section 2

1.

An ideal transition curve is

 A. cubic parabola B. cubic spiral C. clothoid spiral D. true spiral.

Explanation:

IRC recommends Spiral or clothoid as the ideal transition curve due to following reasons:

1. It satisfies that rate of change of centrifugal acceleration is constant i.e., Ls.R = constant. Where Ls = length of transition curve R = radius of curve.

2. The calculation and field implementation of spiral curve is simple and easy.

3. It enhances aesthetics also.

2.

Pantagraph is used for

 A. measuring distances B. measuring areas C. enlarging or reducing plans D. setting out right angles

Explanation:

No answer description available for this question. Let us discuss.

3.

If the angular measurements of a traverse are more precise than its linear measurements, balancing of the traverse, is done by

 A. Bowditch's rule B. Transit rule C. Empirical rule D. all of the above.

Explanation:

No answer description available for this question. Let us discuss.

4.

The branch of surveying in which both horizontal and vertical positions of a point, are determined by making instrumental observations, is known

 A. tacheometry B. tachemetry C. telemetry D. all the above.

Explanation:

No answer description available for this question. Let us discuss.

5.

In levelling operation

 A. when the instrument is being shifted, the staff must not be moved B. when the staff is being carried forward, the instrument must remain stationary C. both (a) and (b) D. neither (a) nor (b).