For the purpose of determining the lands necessary for the uses herein set out, the Utilities Commission or the United States government, or the agents of either, shall have the right to enter upon any lands along the general line of the right-of-way in this Article specified, and make such surveys, and do such other acts as in their judgment may be necessary for the purpose of definitely locating the specific lines of said right-of-way and the lands required for said purposes, and there shall be no claim against the State of North? Carolina or the United States for such acts as may be done in making said surveys. (1931, c. 2, s. 5; 1937, c. 434.)