In municipalities of the class provided for herein, if the water and light plants thereof are under the control and management of a board of public utilities as provided by law, when three-fifths of the board shall deem it necessary and expedient that revenue bonds be issued for any of the purposes provided for herein, it shall be the duty of the governing body of such city within ten days after receiving written request from the board to take the necessary steps to determine the necessity for the issuance of such revenue bonds and the governing body of such city may issue and sell such bonds as it determines necessary, the proceeds thereof to be delivered to the treasurer of the board of public utilities.

Where it is necessary to hold an election to submit the question of the issuing of such revenue bonds to the qualified electors of the municipality, such elections shall be held in accordance with the provisions herein and the general obligation bond election laws of the state of Kansas where applicable, and the cost thereof, if held on dates other than the dates of the regular city election, or general election, shall be paid by the board.