Surveying Booster Quiz -9

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

Consider the following statements:

In levelling operation

1) When the instrument is being shifted, the staff must not be moved.

2) When the staff is being carried forward, the instrument must remain stationary.

Which of the above statements is/are correct?

Select the code for the correct answer from the options given below:

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

The reduced bearing of a line is N 75º W. Its whole circle bearing is

In surveying total station can be used to measure

The Whole Circle Bearing of line AB is 50° and of line BC is 120°. The defection angle at B from AB to BC is :

Select the incorrect statement, from the options, with respect to contouring.

Most total station instruments measure angles by means of ______ of extremely precise digital bar-codes etched on rotating glass cylinders or discs within the instrument.

Sensitivity of a level tube increases with

(i) An increase in radius of curvature of the bubble tube

(ii) Smoothness of finish of the inner surface of the babble tube:

The line normal to the plumb line at all points