No city of the first class shall acquire or construct any public utility under the terms of sections 452.08 to 452.13 unless the proposition to acquire or construct same has first been submitted to the qualified electors of the city at a general city election or at a special election called for that purpose, and been approved by a majority vote of all electors voting upon the proposition.

The question of issuing public utility certificates as provided in section 452.09 may, at the option of the council, be submitted at the same election as the question of the acquisition or construction of the public utility.