Bonds issued under the provisions of this act shall not be included in fixing the limit of bonded indebtedness of cities of the second class. Bonds issued under the provisions of this act shall not be included in fixing the limit of bonded indebtedness of cities of the third class if the question of the issuance of such bonds has been submitted to and approved by a majority of the qualified electors of such city voting thereon at an election noticed, called and held in the manner provided in Kan. Stat. Ann. § 10-120.