UPPSC AE (CE) Quiz 32

Statement (I): Geodetic survey cannot be done for works requiring high precision.

Statement (II): The curvature of earth is accounted for measurements in Geodetic survey.

Assertion (A): The back sight is used to determine the height of instrument in the rise and fall method of booking levels.

Reason (R): The height of instrument is given as the sum of the elevation of benchmark and the back sight.

The combined correction for curvature and refraction for a distance of 3400 m will be nearly

Levelling data is provided. Which of the following statements is true?

Which ones of the following are perpendicular to the plumb line?

i. Level Surface

ii. Level Line

iii. Horizontal Plane

iv. Horizontal Line

What is the length of one division of a bubble tube if the staff reading changes from 1.375 to 1.45 if the bubble moves 4 divisions out of the center? The staff is at a distance of 300m from the instrument and the radius of curvature of the bubble tube is 40m.

The levelling data is given. What are the values of P and Q?

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

Which one of the following can be increased to increase the sensitivity of the bubble tube?

The staff is located at a distance of 700m from the levelling instrument. If the observed reading is 2.736, what will be the corrected reading?