Surveying Booster Quiz -3

A map is to be prepared showing details of all natural and artificial features of earth. Which type of survey will be carried out.

A line measuring 16 cm on plan is actually 245 m long on ground. What is the scale adopted for surveying?

A scale has a representative fraction of  . What will be the length measured on the ground if the length of plan is 5 cm.

The focal length of a telescope is found to be 0.25 m and the stadia interval of the tacheometer is 2 mm. The stadia interval factor will be

Statement 1: A magnetic needle suspended freely might not be aligned with the magnetic north.

Statement 2: Magnetic needle deviates from its path due to presence of magnetic substances nearby known as local attraction.

Which of the following errors can be eliminated using reciprocal levelling?

Planimeter is an instrument used to measure

Which one of the following statements is true?

i. Correction due to earth’s curvature is always negative

ii. Correction due to refraction is always negative

iii. Combined correction due to curvature and refraction is always negative