PPSC CE SURVEY Quiz 2

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

i. Level Surface

ii. Level Line

iii. Horizontal Plane

iv. Horizontal Line

Assertion (A): The mean sea level provides a convenient datum all over the world.

Reason (R): The sea level at a place never changes.

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

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

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

In a levelling operation, the level was first set up at station A and staff readings at A and B respectively were 1.675 and 2.738. The level was then moved to B and the readings taken at A and B were 1.583 and 2.644. What is the reduced level of B if the reduced level of A is 100.3m?